Parts swap on industrial 318
Hey Dan. Welcome aboard!
A 318 is a 318 no matter what label they put on it. The only significant changes to the engine throughout the years is really the pistons used. Earlier 318’s used slightly more compression and later years used less. It’s all in the piston height.
All the parts that bolt onto the block are swap-able from the first “Poly” years, the “LA” years and even the 5.2 Magnum engines. Though, not the roller cam. Amazing longevity with that A engine platform.