Help with air conditioning

inlet and outlets are the same size, it all appears the same except for the position of the connector, but maybe that's adjustable. I can't say it works the same however, maybe it does. I'll bench test it and report back. (Photograph is before I transferred the grommets to the new one)

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Okay, so I think the issue with the hot water permanently flowing through the heater matrix might be finally solved. Thank you everyone for tips and suggestions, it was a big help.
The culprit appears to been a faulty hot water valve, even though I bought the whole unit brand new last year for $355.00. When 12V is fed to it, the plunger seal thing only extends a few millimeters, when I apply the same current to a replacement valve I bought online, hey presto, it extends fully.
Last year when I replaced the full assembly, it was pretty dumb of me not to open it up. I would have seen how simple it is and that replacement innards can be bought for less than $20.
There is no longer the blast of hot air when I turn on the ventilation on, and the A/C no longer has to be at war with searing heat. Now I can focus on the issue of the A/C turning itself off after 20 minutes or so.

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Thanks Urs, it was mainly you guys. Also, I was using your wiring diagrams to try and figure out a few electrical quirks, like when the hot water valve is unplugged, the car will not start (no spark). Anyway, 1/2 problems solved, currently working on the a/c shutting off.