I have an 89 FSB with a 4.9 EFI engine. I've used the search button but haven't found any info on swapping a 4.9 efi to a 5.8 efi as far as being able to use the same wiring harness and tranny (c-6). I also have a carburated 460 sitting in my garage with the rest of the drive train (C-6, NP 205 transfercase, D 44, ford 9'' rear end) that came out of a 78 or 79 bronco. So my dilema is I don't know if I should convert my truck to a carburated set up or try to find a 5.8 efi since I intend to use it as a daily driver and occasional mud toy and gas prices are crazy these days :banghead . Any suggestions would be appreciated guys.