I have been reading countless threads on headers and fitment. I have to say, I think this is where the extra cost for these headers is worth it. I am able to take the starter out in about 3 minutes with these headers, and also, you can easily pull the trans. You would have to take the tranny and bell housing out separatley, but you would have no problems doing a clutch with these headers on. Not to mention, I went with the 1 3/4" primarys and 3" collectors, and still have room to remove these parts. The quality and fitment of these parts is far beyond my expectations. I have done BBK, Bassani, and Mac, and none fit as well as these. Just info for you all.