Hurst does make a Billet/Plus Shifter for the Tremec 3650.
The part number is: 391 5035.
I called Summit Racing and they are going to add it to their product offering when it is available which should be sometime March 2002.
I really like the Hurst and have always had a Hurst shifter. I had one in my 1969 GTO and 1996 Cobra and never missed a 2-3 shift in over 250+ dragstrip passes (in the Cobra).
I like Pro 5.0 as well. I think any of them are good (B&M, Steeda, etc.) but it just comes down to your preference. I have tried Steeda and Pro 5.0 in friends cars but still like the Hurst the best.
Go to the Mr. Gasket webpage and download the new catalog.