AC 93 high pressure quick coupler - P/N or where to buy?

[Sabinoerc]

Hi, I have a 93 Suburban which has been converted to R134 a long time ago. A/C wasn't working and when checking pressure I heard a hiss and the elbow of the high pressure quick coupler is "loose"/ rotates. Kinda hard to explain but pics show what I mean. I never noticed that it rotated before and not 100% sure it's not just because pressure is low - but would like to replace it.
I searched parts manual but of course it's for the old R12. Googled "GM R134a high pressure quick coupler" and was flooded by 1000's hits but nothing right - needle in haystack.
Just hoping someone has done this, can point in right direction to save me some time.
Thanks!

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[GoToGuy]

A more current production fitting screws into the aluminum tube b nut. Without the 90 ° adapter cobbled on it. Most parts stock them at the AC displays with conversion and replacement fittings. Means pulling the 134 out, replace the fitting and service the 134.

 

[Sabinoerc]

Thanks, I also found googling “R134a service port” brings up parts in the right ballpark. Autozone/Orielly have “conversion kit” packs which may have something which may fit but hard to tell and cheap looking. Found something online which I think will work.