Mmmm... dunno if 3 degrees angle is really a difference to be considered as a diff part. Why I say this? My 74 Charger ( yes I know, a diff monster ) got aligment shims between steering box and K member. So those 3 degrees could be considered as a tolerance when part is being manufactured, able to be corrected when assembling.

We know our cars are not a piece of art on precision at factory. Just looking at the low quality of welding seams of K members you can tell it.