It's from a used engine I just picked up. I'll measure the distances of 2 known motors I have and see where this new motor is off. This motor has a crank pully that has 2 pulleys (I guess A/C or smog pump) and it looks to be cast as opposed to the stamped steel ones I am familiar with. It also has holes drilled in it probably for balancing, don't know. Hope that info adds to the possible solution.