Choke butterfly? If electric choke, that would have some resistance cold, and softer warm, is that what I read? Does the vehicle not run correctly? Or are you just pushing it open and trying to find something wrong?!?
5 or 6 bolt is what engine. 5 L16 and 18. 6 L20b and Z's. If you have the L20b, you can use the z flywheel that the clutch and tranny are already a "set" throw out , fork, and such. I had the 3 speed auto, thought about a 5speed, but went with a maxima 4 speed overdrive. A little tight but I fucking love it! And it flys on the freeway now...