Best to Google Muncie, Hurst etc. You can find all the part numbers and everything you just have to do some serious searching on the net. You will be amazed at all the parts etc. The good news is most Hurst install kits are still available from places like JEGs as they do offer complete kits you just need to be sure if you have an original shifter body, after market etc. at they are different as well.
There is a lot more to this than what most people realize I beleive. I think people just engineer parts on their own making their own shifter linkages etc. Trust me, if you take the time and effort to round up the correct parts, your car will be mor e enjoyable to say the least. It's nice to have a correct setup and not have the shifter lock up, scrape, grind, crunch, hit the console and the list goes on.
As I've said before now that I have mine correctly installed with ALL the correct parts, it is truly like driving a brand new car. The darn thing almost shifts itself. I learned all of this from a few folks on this site who helped me round up the parts and my buddy down here who helped me install everything...