New hurst shifter
I put a Hurst Indy shifter in my 68 Barracuda. It is an a-body specific one that comes with new levers for the tranny, rods, the adapter to bolt to the tranny and all the hardware necessary to install it. The only down side is it comes with a short 7" straignt handle that bolts on. That was an easy fix though; I just picked up a handle I liked at a swap meet for a couple of bucks cut it to the length I wanted drilled the two holes and mounted it. I am quite sure you could drill the holes in the plug in handle you have. It doesn't have the adjustable stops the Competition Plus has but the frame is dimpled where they go so I drilled them out and tapped the frame for the stops too.
The shifter works great; nice short precise throws. It was about $150 from Jegs.