I'm all for making special tools...
But when all you need are your fingers to do the job what's the point.
Your two hands are very important tools and are quite special...

I've had no problems or need for a tool to remove or replace the chevy shifters in the transmissions I have.

Grigg

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-