I purchased the shifter from:
Custom Pistol Grips
3470 Barrancas Ave
Pensacola, FL 32507
1-(800)-642-9464
www.challengerpistolgrip.com

It's been over a year so I don't know what the current pricing is (was $175.00). Mine is Carbon Fiber, but they also offered Wood (light and dark) as well as NOS Plastic replacements for the stock Mopar Hurst pistol grip shifters from the '70's.