Greetings from Canada. I am working on a '47 Canadian Dodge D25 which currently has a Flathead 6 in it with a 3-in-the-tree. I have an '85 Fifth Ave with a 318, 904 and 8 1/4" that I'd like to transplant. (I want to keep the Flathead and Trans for a future 30's Hot Rod Project.) The first project is the floor. I've been able to source new Rockers, but no floor panels, so I am just going to pick away at it. The first question that comes to mind though is whether I should lift the body off the frame and do the chassis build first, then the body to fit, or the body first? I know that the floor is what holds the body straight and square, but I fear I am going to go to a lot of effort in rebuilding the floor and then have to chop it up anyway or even redesign. Any help in any way is greatly appreciated.