Three of my last stormtrooper packs got turned into a full sized stormtrooper transport.
Though it's only sparsely manned at the moment, there is space for the full compliment of 12 stormtroopers (6 inside, 6 out) and if you don't care about shooting you can also put cargo on the roof :)
The model itself would be better if I'd elected to use bits from my collection but I wanted to see if one of these could be built using only what came with the stormtrooper transport battle packs. Not bad though considering. working side/rear hatches, rotating turret, exterior crew racks, destroyable port wall, two compartments (there's a passage connecting the front and rear)