please i'll take help from anyone on this one , A friend of mine wrecked his cadi SLS or STS i know its a 1999 4.3 northstar front wheel drive 300 hp engine with 70,000 miles on it , my question is besides changing the camshafts(what i dont want to do! can u say 300hp) what can i do to make this engine work in my 97 deville,i was told by an mechanic i could change the engine ecm and that should be all that i need,then i was told that the cadillac have about 5 ecm systems in the entire car. can somebody help me make this work????? If i only need to change the ecm could you tell me where is it located, Anyone have a good cadillac repair shop in west palm beach florida that would do a engine swap THANKS :alchi: