Im going to get a 05 V6 premium and get the 5.4 alum block and the GT heads. I dont even know if this kind of conversion has been done before. Im sure it will be alot of work, but in the end I'll have exactly what I want. I can get a six for 17-20K. The cheapest GT I've seen around is around 26K. The diffrence can buy the engine, trans, and rear that I want.
Sounds like a good plan
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2004 Cobra, Whipple ,TH-400
Burning Corn
9.97 - 135.5