Thanks for the add, I'm Steve. I have a 1989 Mustang convertible that is a donor for my 1970 F100. I'm going to be swapping the 5.0 MAF engine into that sometime in my life. The main one I have questions on is my 1993 F250; it's got the 351W SD and I am looking for suggestions to put in a mild tune. It's a daily/beater but I want to do the roller conversion and bump the cam a little and am not sure how big I can go with out massive modifications. I'm not looking to MAF it just rebuild and tweak. Any advice is welcome; I'm not very fluent in EFI. Give me a carb and I'm home but I'm trying to step into new things; plus I just like the ease of EFI in cold weather.