First off, I'm a student at McPherson College doing the Auto Restoration major. I picked up this Z in the Texas Hill Country where I'm originally from in exchange for a '47 Chevy coupe. I knew there was rust going into it, but now I've stripped the shell and I've got rust in practically every place I could have it. It's approaching too far gone, but I'm tackling it anyway. There's a completely rust free 280 body I'm going to pick up for patch panels that has been wrecked in the front end. My question is how much of the 280 can I graft onto the 240 without being a detriment to such an early car? Is it blasphemous to use the longer frame rails under the floor? Will that add enough stiffness to justify doing it as opposed to fabricating early style frame rails? I've heard the trans tunnel has a different shape on 280s, so perhaps the floors won't fit at all. Even that isn't so easy because my inner rockers are rusted where they meet the floors as well. How about the stacked boxes of the frame behind the t/c rod mount? I'm not after a custom job, but a mostly stock finished product capable of being a daily. I intend it to be more of a personal car than a flip, but I am interested in having a 240 when it's done and not a total frankencar. Any advice on how to approach the rust would be much appreciated.