I bought my 77 D100 pickup 7 years ago. It never shifted right when I first got it, so I started trying to track down the problem. Turns out that the dweeb I got it from just threw a bunch of parts at it. It had small block brackets and God only knows what the other parts were from. Long story short, I needed to drive the truck, so I bought a cheap eBay copy of the Lokar kit. I put a spring on the lever at the trans and the carb end of the cable and with a bit of adjustment, it's worked fine every since. It was a pretty easy and basic fix to make it work and I have used the same set up on several other vehicles over the past few years. If you use the cable set up, be prepared and pay attention to the travel and set it accordingly as stated by others.