I've got a 1963 Chevy 230 six that I'm putting in a 1952 Chevy coupe. I don't know too much about transmissions, so I thought I'd post a question here and see if anyone can help me. A 3 speed saginaw was originally bolted up to the 230. I was hoping to change to a 5 speed while I have the engine out. From the research I've done, the 230 has the same bellhousing bolt pattern as some of the bigger V6's like the 4.3, and the small block V8s. A talked to a guy about a transmission he has that came out of a chevy truck with a 4.3. It's a 5 speed, and I'm assuming it's a T5 but I'm not sure because he said the bellhousing was one piece with the transmission casing, and I thought T5's all had bellhousing that would unbolt from the tranny. The 3 speed that's on the 230 right now has a 10 spline input shaft. He said his transmission has an input shaft with 10 splines as well. What I need to know most is, if the clutch that was being used for the 230 and 3 speed will fit on the input shaft of the new 5 speed, will I be able to reuse that clutch setup or will I need to find one specifically for the 5 speed. Any help, or even suggestions of other transmissions, would be greatly appreciated. Also, one more question. The gear ratio with the current tranny and rearend means the car tops in 3rd around 45-50 mph, as is expected. The rearend gears for those cars seem to be ridiculously expensive. If I keep the rear gears the same and put a 5 speed in, would it help remedy that issue and get me to where I could drive somewhat comfortably on the interstate? Thanks!