Wow J, are you giving up on that frame you just had media blasted? I am guessing on the answer to your question and would guess that the frames would be interchangeable. I would imagine that some things, mostly body panels would have to be modified but most of the stuff underneath would work. Again I am just guessing. The only reason I am guessing is because I was interested recently in an FJ. The FJ uses the same frame if I am not mistaken. I just think back in the day they tried to make different versions of the same vehicle and did it keeping the base the same. This saved them a lot of money in manufacturer costs. Is there anyway to get the two frames next to each other? If not can you take a lot of measurements? Tough decision when you are unsure. Good luck.