I want to swap out the engine in my 97 gt with a 97-98 cobra engine or a 99 up PI engine, what do you think would be more straight forward, i know the Gt engine will be cheaper, but im concerend with the full system. I know the 99 and up engines had the returnless fuel system. And also will my stock computer be compadible with either. any insite will be appreciated. 
