maybe its not the point of all the work, and what he has to change etc, just go with a carbed 5.0 and u dont have to worry about any wiring harness/ecus or anything...i think it would be a cool swap!
modular 5.4 swap... mmm.. TQ! you can get adapter plates and run the stock 99-04 PI intake and everything else. just need custom exhaust and it should all fit under the stock hood