i had an M85 (methanol) chevy lumina. it had stainless lines, tank, different injectors, different plugs, some sort of monitor system, and the vaccuum reserve was different too.
being carb'd i would think maybe the jets would need to be stainless..?
can i ask why you would do this? i havent seen any real evidence pointing to better gas mileage. just cleaner emissions. in my lumina i got about half as much per tank, with no felt performance gains..but again, thats old technology, maybe the E85 is a bit diffferent.