I see NMCA (?) has a new 5.0 Coyote class for all 1954 and newer Ford vehicles. They will use sealed from Ford engines.
I have this outrageously fun '03 Focus SVT. There's a bolt in V-8 kit made by somebody and it will even accommodate the Ford modular engines. Now a 420+ HP Coyote in a Focus could be a lot of fun...hmmmm