ive been thiking on how im going to do this. i want to take the old floor out and grind down the rust of the frame..and fix some of my rusted core supports. after i do that, im going to put the rear floor in. well how would you put it in if its all in one peice like i plan to get im going to be putting new body mountsin under the floor, so how would i weld the floor in and then lower it down on the new ody mounts? this seems like it would be kind of tricky.