[68gmsee]

Trying to match these parts is difficult unless you're lucky. There's been many parts swapped and configurations changed in the last 40 plus years. Best thing is to get all the parts from a completely stock engine otherwise you will have to do some tweaking, adding spacers and maybe fabricating brackts.

I always tell anyone that's converting to p.s. to get everything from the water pump and harmonic balancer forward. In other words all the pulleys, belts, alternator, fan pulley and all mounting brackets off the donor engine (if at all possible). Even if the parts are bent, rusted or unusable they can be used to match to newer ones.