Update to question one.

235 car front mount on the sides of the engine. Truck front mount has one mount to the radiator crossmember.

https://www.stovebolt.com/techtips/motormount_235.html
https://www.stovebolt.com/techtips/engines/motor_mount_front/index.html.


Beginning 1954 the rear engine mount design changed. Crossmember and bell housing affected.
You have a 1951 truck so you will need a pre-54 bell housing.

Last edited by buoymaker; 03/04/2022 9:21 PM.

"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."