G-Man, I have one off my Tremec TKO 3550. If someone can verify that it fits, I'll sell it to you. Has the pseudo reverse lockout mechanism and a black "4-speed" knob on it.
Both sell new for $157 plus shipping. I'll sell you mine for $100 plus shipping (from California). Shifter had 6,500 miles on my Superformance. I swapped it out for a shorter, Jordan shifter (I have gorilla length arms) and Pro 5.0 billet mechanism.
Let me know!
-Dean