I would start with finding a really good FE engine machine shop in your area. And then talk to FE people, The FE engine responds differently to options than a small block ford or chevy. My first call would be to Scott Main @ cam research(303-762-0022). He is one of the best cam and head guys I have met and does know FE's very well. FE engines build torque easily so don't confuse that with big porting and crazy cams. One of the best items to help it out is a good Exhaust system. Fe's are week in the exhaust area in mustangs.