Should I try 4.0L H.O.'s efi on my 4.2L or put in a v8?

umm, thats a pretty generic question. do a search and see all the shit people doing v8 swaps have to do, and see the price of an mpfi swap on a 6.

your basically asking how to spend your money. I say put it in an envelope and send it to me

doh. I meant it in a power per dollar kinda way. used EFI from a 4.0L H.O. should be under $500 I think.

go V8 and dont look back, Im saving for my TBI 350.

Well a V8 swap is going to cost a lot more that $500, and you could always sell the EFI 4.2.

Just my 2 cents. :D