I picked up a POSI ported eaton last week and after looking it over I moticed that there was no "POSI" or build number stamped under the snout. Also the inlet side of the blower is not fully ported, just the inner edge is cleaned up. Underneath the blower, on the outlet side does have the POSI port design which looks ok. I've heard that the early run POSI blowers were different somehow. Just wondering it thats what this is or if its not a true POSI blower? Thanks!