I have a 2002 WS6 collectors edition and instead of an expensive (cam, etc) repair -- was thinking of putting in a brand new engine with more horsepower. I was told by a speed shop that certain LS engines are not compatible due to electric and computer issues. Does anyone know via experience which engines are compatible? I'd like to buy a LS2 or LS3 and use as many accessories from my LS1 as possible. Thanks in advance.