Núm cần số Datsun Roadster

Datsun Roadster Shift Knob, based off the stock knob from my car. I am still trying to figure out a good way to recreate the metal base piece, but this is where I am so far. Will update when/ if I figure something out. The hole for the shit lever is undersized to self tap when installing.

The print pictured was printed in ASA with 4 walls and 50 percent infill, and feels pretty solid, but printing solid would probably be best. Printing vertically with no supports worked fine. I would highly recommend using variable layer height. I also acetone smoothed, then sanded and polished to get the finish pictured, which could still use some work.