Deffinitely go with the 4-speed. I have a numbers matching car, but the conversion is all bolt on so I am doing it too. I hate to say it but e-bay is pretty good at finding the parts. I found many listings that had the complete set up for sale (z bar, pedals, bell housing, drive shaft...) Besides, what is more cool that an old muscle car with a 4-speed? Check out the FAQ on this site for info on the swap.
