I was curious if I could take 2003/04 Mach one heads or 03/04 cobra terminator heads and put them on my 2001 cobra. If I can what adjustments should I do post replacement? Thanks JR
They're a direct bolt on. You'd want to keep the 01 intake cams though.
Unless your current heads are bad or the engine is out I wouldn't go through the trouble of swapping heads. There isn't enough gains, if any, to make it worth the work.
They will bolt right on. They are only a slight improvement over your current heads. You will want to keep your current camshafts as they have more duration than the 03/04's. Have them gone over and check the seats as they tend to get loose and fall out over time. Have a valve job done.