In the automotive field you go by the low side fitting. The fittings you show with the funny high side is correct for a r12 system. The high side could take either a screw on or a quick connect hose. They had to keep the low side the same as all other R12 systems. Before the R134 came out, we had a hose for the low side of all cars and a box of high side adapters as each manufacturer had a different high side. Well, not all manufacturers but many had different high side connections. Such is the automotive world. Now, as far as what it has in it at this time is anybody's guess.

Paul

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84 500 SEL (307,xxx miles)