What choose a reverse valve body?

Ok, with "modern" ratchet shifters, you'd bout have to be a dumbass
Years sgo I had just bought a 70 ford F250. Someone had swapped in a 460. It was automatic. In all the 60s fords i had had if you were full throttle and threw the shifter all the way to L it would only downshift one gear.

To my suprise this transmission would go into whatever gear the selector was pointed to, (AT ANY SPEED)

lets put it this way...

Im a dumbass!

Foot to the floor at 75mph on the freeway threw it down to L

Imagine my suprise at the RPM and the fact that that i actually slowed down real fast.