I left my painted body sitting on towels on the garage floor for over a year (before that, it was on a body buck out in the elements for ~ 6-8 months); the only other thing I did was support the rear (under trunk opening) with a 4 x 4 with a towel between the body and the wood. Put the body on a few weeks ago with no issues. Not saying this is really OK, but....In the manual FFR says you can just support in the fender wells with vertical 2 x 4's.