Hi everyone,
I just remembered that last year when I needed to weigh a car of mine, I just took it took the post office!

So that's what I did just now.
So to share with you the specs (if anyone is interested). I used a DEX210 Gearbox with:
- 4-Gear Layout.
- Ball Diff.
- Long Ball Diff Outdrives.
- Ceramic Diff Balls.
- 78T Spur Gear.
- No motor, pinion, shock tower, wing mounts, bumper, gear cover, pivot balls or screws related to fix these items.
The weight came in at 139 grams. I haven't got other gearbox weight data to compare it with now, but it might still prove a nice statistic for DIY'ers