my son was gonna do one of those swaps. he had a book that told all the in's and out's. maybe your library has it, or the parts store.
in my experience it is always best to buy a swap kit with headers etc from the same manufacturer. that way it all fits. usually just as cheap as parting it all seperately, but i think the book was good at saying what parts to use from which odd vehicle. there is also a dedicated site for v8 s10 swaps.
good luck and don't forget to install a holy crap handle for the passenger.
keep us posted