I have a set of MT repro headers on my car and I did not have to lift the motor but I had to get the car pretty high up off the ground to get the very long collectors in. I believe I had to remove the starter was about the worst of it. I had a set of Hookers on another car and they were the ones were one tube goes outside the frame. Real pain and you have to cut up inner fenders or take them out. They ran good, though! I had a set of other headers but I don't remember the make. Probably Kenne-Bell but I can't say for sure. You can always go for the shorties if you do not want to mess with a lot of other stuff. The ground clearance is awesome on shorties! I sometimes wish I'd went that way.
Not 100% sure on the currrent hookers but I think they are inside frame now. Nice Thing about TA headers is they have the notch cut out so it clears stock dip-stick. Others do not. Big problem I have with the MT's is the ground clearance is not good. They hit ever speed bump.
