As for the base of the shifter that mounts to the transmission, B&M ripper is the only option. You have to re-use your upper shaft and knob. You can get a different upper shaft, I used to have the angled back one from UPR Products and it was for a mustang but worked. I also had a carbon fiber Hurst short knob on it and used a black leather MOMO boot. I bought my ripper shortly after they came out and I love it. I have the revised one without the adjustable stops, but it shifts great. My stock shifter was so sloppy it could move while in gear and it was very loose and hard to find some of the gears. The bottom stock parts were all worn or missing.
I know have the stock upper shaft with a B&M polished T-handle (was for standard thread and ours is metric thread, so I had to wrap a ton of teflon tape around the shaft, soak it with red loc-tite, and then setup the t-handle where I wanted it. It was fine the next day after it dried over night. I've only had it come loose once in the past 4 years, and that was because it got kicked.... long story. More loc-tite solved the problem.
You can even cut the stock upper shaft and remove a chunk of it, weld it back together to shorten the height of the shifter, but I didn't need to because with the T-Handle knob it's not very tall. Just remember that the shorter you make the shaft, the less leverage you have to make the shift. It looks nice low, but since this car's shifter is directly connected to the transmission you will increase the effort it takes to shift it.
If I get another knob for my 5-speed car it's going to be a t-handle with the button for the line lock kit I plan to install. Hurst t-handles come in the metric thread and fit fine. B&M as far as I know only makes them in the standard thread. But I wanted B&M since I have the B&M ripper.