I decided to install the Lokar column shift linkage. If you use this on a 4l80e, you will want to take the allen head out of the adjustable piece that bokts onto the side of the transmission, and shift the insert to where the arm is almost horizontal when in park. I will upload a picture to show what I mean. If you dont the piece will be sticking up vertically when you’re in park.
These aren’t my photos but I followed these to do the install. I also had to bend the shaft in order for it to work.
The pic probably posted sideways... but the adjustable arm bolted to the trans should be all the way forward/horizontal with your column in park.