Looks great thats a mustang cobra engine by the way not a Shelby. depending on yrs 300-315bhp, looking at the intake it a later one, Might also take another WILD guess and say although it a mustang cobra engine it was due to be fitted in a MG not a ford!?
Anyway if you need any parts for the engine when you get power hungry let us know, We do alot with Modular Ford engines, currently a twin turbo version of what you have there and also a 5.4 version with a 2.8 Kennebell supercharger going into a Ford Lightning, Both are fully built engines though as conrods are the weak link in them.