papaindigo wrote:
I see that (PN 4936K155). It probably will work but may require a bit of grinding as geordi and I found clearance in there is really tight. Shaving a bit off the head with a disc sander/cutoff blade to turn the 0.75"/19mm hex head into the next size down made things a lot easier on my install. For what it's worth McMaster-Carr has as stainless steel thick wall 1.5" nipple PN 46755K22 and a stainless steel elbow PN 46755K22 for about $5@ if the use of brass plumbing hardware worries you.
I was looking at those ports more for a bypass cooler. I would probably go with a 14mm banjo I found.