I have read about alot of problems/issues with the conversion on 1986-88 5.0s why would'nt a new cpu or chip tailored to my new specs work just as good?
It's been done, supposidly it's very time consuming and very expensive to have a program done specifically for a car that should have mass air.
There were guys on 50tech.com that were on a mission to keep SD, and it costed way more than just doing a maf conversion.
A maf conversion isn't all that hard or expensive, just do it the right way, so you don't need a dyno tune every time you touch the car.