Rwd k11 build :))

[turn69up]

Ive been told u need to put a lot of bacing in a car when u cut the floor out as it flexes heaps and u probs wont get it in the right spot again

[dove grey 64]

sort of.... its mainly when you remove the roof of a car not the floor pan, so long as it still has a,b,c pillars and the sills it will stay in shape as sr_andy said with the doors still closing etc.

[haveaparty]

U can remove a roof off of a vehicle and its not going to move out of square. Roofs are just panels that are sat on top and spot welded on. They have zero structural strength.