So I finished the gear knob finally.
The good angle showing the good bit of Chrome at the bottom
I found that I couldn't get the polyurethane not to leave a splotchy look, after many tries I found the best method for the best finish is to use fine 000 steel wool between coats then lightly spray a mist (very light), wait 2 hours and spray another thin mist and let it dry. Then steel wool (repeat). This seems to have given it the best glossy look.
Next to attach the 5 speed button. I bought a glue gun from Office Works for like $10 or so.
When attaching the button make sure the gear knob is done up tight on the shifter. Then glue the button down facing the right direction.
If the thread on the gear knob is worn out, you can simply use an epoxy type glue in the thread, then drill a slightly smaller diameter hole and then thread it onto the gear shift lever which will thread it again for you. Thankfully mine wasn't clapped out and still has good internal thread.