Well that 100 metric tons (call it 10 displacement tons

you'll see) works with the idea I was playing with. Sorry for the delay in getting this typed up endersig.
Basically an old system mod I was playing with back in the days of LBBs hot off the press. Can't recall why, might even have been Star Wars related
Anyway using High Guard build rules for the most part, with one major difference. All references in the rules to tons are treated as mass tons not displacement tons. A displacement figure is arrived at by dividing the mass tons by 10. So for example to build the X-wing, working from we know it's about 2 displacement tons, we build it as if it is 10 times that in mass tons using HG as noted above.
</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">X-Wing TL15 MCr28.635
+20.0 tons Hull - Needle - SL MCr2.400
-0.8 tons Hyperdrive 3P (1) MCr3.200
-6.0 tons fuel xJ3
-3.4 tons Thrusters 6G MCr1.700
agility 6 (2)
-1.2 tons Main Power 6 MCr3.600
-1.2 tons fuel x4days (3)
-0.5 tons Pilot seat (4) MCr0.025
-0.5 tons R2 socket
-1.0 tons Computer m/1bis MCr4.000
-0.2 tons Cargo hold
-1.2 tons Armor Plating F5 MCr0.960
-0.5 tons Fixed Hardpoint (5)
Lasers F3 (6) MCr2.000
Launcher F2 (7) MCr0.750
-2.0 tons Weapons Power 10 (8) MCr6.000
-0.5 tons fuel x1day
-0.8 tons Shield Generator F7 (9) MCr4.000
-0.2 tons fuel x1day
(1) But it looks like the 3 parsec figure you
found for the Hoth-Dagobah trip is off looking at
the maps I found. No problem really, see the
description below for SW "fuel".
(2) The main power is for the drives (hyper and
normal space) and agility only.
(3) In the SW universe 4 days is lots, there is no
need for weeks of fuel endurance in most cases so
while it's calcualted as for weeks it is read in
days, also again see the note below for SW
"fuel".
(4) HG only requires a seat and computer as an
option.
(5) A fixed hardpoint is free and allows the
mounting of up to three weapons in half the space
and weight of a full turret. The weapons are
fired by the pilot pointing the whole craft at
the target and are subject to a -1 to hit. There
is no requirement for a computer or Target
program to use fixed fire weapons. "Stay on
target, stay on target." Though there are other
disadvantages
(6) Two standard beam lasers to model the four
lasers.
(7) A single missle launcher to model the double
proton torpedo launcher.
(8) Weapons power. May be rerouted if needed.
(9) My shield generator is a combination of two
elements. Begin by calculating the desired factor
as for hard armor of the same TL. Take the tons
and read that as the power required in EP and
divide it by 2. Then make a power plant of that
EP output. Use the tons of power plant as the
tons for the shield generator. Calculate fuel
normally. The cost of the shield generator is
found by adding the cost of the equivalent hard
armor and the power plant of the required EP.
Shields stack with hard armor. Damage to armor is
taken from Shields first if applicable and then
Plating.
Fuel Note - All reference to fuel above should be
taken to mean a high energy capacitor that is
recharged by a ground station, portable generator
or other source, even solar. So even though the
X-Wing only has a hyper-drive range of 3 parsecs
before needing to recharge (unless it draws from
it's other capacitors if sufficient), the speed
of travel is such that dropping out of
hyper-space every few seconds to recharge the
capacitors for another jump is no real limit on
it's range, only on the speed of the trip.
Computer - Normally the R2 unit handles the
flight of the craft while the human concentrates
on their role as gunner. The standard program
loadout is Maneuver Evade 1, Generate, Gunner
Interact, and Predict 1. For hyper-space travel
this is swapped out for Jump 3 and
Navigate.</pre>[/QUOTE]Subject to fixes (ask questions if it's unclear) but it looks like it might work. So you see now that 100 metric tons of cargo, divided by 10 is 10 displacement tons of cargo (close enough). Not a freighter so much as an express delivery truck. If we can nail down the displacement of the Falcon I'll be happy to see how it works with this system. Right now I think there's no shortage of hardpoints for weapons on it since even the smallest at some 60 tons displacement means 600 metric tons for up to 6 hardpoints