318 to 440 dart.

Love my BB A-body! Went Schumacher route with what they called a 'Magnum' mount at the time (I believe the Polylocs are the replacement for those now) and their torque strap just for good measure. Agree with the shim kit. I have /6 K and with the mod that has to be done to the driver side perch on those, I later welded in a 1/4" plate that served as both a shim and reinforcement.