How many different P/N's are there for OBD1 intakes

[E30 Memorial]

I was noticing several different P/N's on the OBD1 intake manifolds and I'm curious as to how many different numbers there are? What numbers come from which motors/cars? And is there any preference or performance advantages?

[Jason89i]

...... I'm curious as to how many different numbers there are?

i have noticed (3) different styles. basically its different exterior fins / vac ports. visually, i have not noticed any difference in runner length or chamber design. i too am curious if there are other internal differences. cheers, jason

[E30 Memorial]

Can anyone identify a couple part numbers for me? I'm not able to get them to come up on Realoem.
1 735 728-2.0 I was told by the seller is from a 95 m3.
Another part number 1 720 197 2.0 was advertised in an ad, but I receive 1 735 197-2.0 which does not have as large of ports as the m3 manifold.
Any insight would be helpful.
Thanks,