1957 Truck
Bottom transmission mounts are threaded on a truck (cars are not).
The OD option could be ordered to go with the 235, 261, 265 or 283 engines.
The kick-down switch bracket parts will be different between a Rochester B (I6) and the Rochester 2GC (V8).
4.11 ratio rear axle.

"Adding CFM to a truck will only help at engine speeds you don't want to use."
"I found there was nothing to gain beyond 400 CFM."