For my 1992 Manticore project I was planning to pull all the fake wood and go with a Nielex style tombstone and all the other related goodies. I then bought this shifter knob that was to match my white car color along with the black racing stripes I was planning to add.
Since that time I decided not to go with the retro look and create my own limited edition version. The interior will remain as it is with the fake wood. I know, I know, but I think you will like the final result. It still will have the racing stripes!

So the never been installed shifter knob is available for $18.00 shipped in the USA. I paid $46.95 shipped. You can now find them on eBay for $41.85 shipped. The shifter knob is just like a pool cue ball and is the same size. It is about 2-1/8" diameter. The thread is M10 x 1.25. Comes with the Twisted ShifterZ receipt. The workmanship is very nice!