Lonnie,
I would recommend that you contact California Performance Transmissions in Huntington Beach, CA. He is the real Art Carr and has been around since the Hydramatic was new.
Fred


1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine