None are actual turnkey. Some of the high performance, high dollar ones have carbs & dist. & damper on them. The basic one is the 260 HP. Its what I use & put on my own manifolds, dist. & such. The 290 is the same thing with a more performance cam. I like the one with the aluminum heads but am too tight to spend that much. You can e-mail me or just describe the one you are interested in the post with the cam specks & a lot of fellow bolters will help out. Hot Rod Lincoln is good with the cam specks.