Im tryin to make a price list for a new motor i wanna do. If i do fuel injected do i needa buy a new computer or anything else like that?

 

yes. but it all really depends on how you run the fuel injection.

Holley and Edlebrock offer TBI kits that come with a calibrated computer module, TBI intake, throttle body, injectors, and some other crap.

if you did like an OEM EFI system from ford, you'd need a computer from a mustang to run it.

 

you wont need a whole new EEC computer, but
you will need a custom chip or dyno tune to tell the
EEC the bigger displacement.