well mine came with the newer fusse block and instead of trying to integrate it into the old one or making one like lt1 swap, i kept the new block and just added 3 relays to make it work. wasnt that hard to do. if you dont want to find a newer block or make your own, since your taking away the engine control circuits from the old fuse block, you should be able to fit the new into it. i cant tell you how as i didnt personally do that but im sure if you have the diagrams from both vehicles, it should def be possible. but those are pretty much your only 3 choices..