Rare 1986 W123 230E parts, info needed

[MercPorsche]

I'm now the owner of a 1985/86 W123 230E Euro. It was federalized in Texas from Europe. The plate in the door says 1986. For clarification I've owned 6 or 7 W123's and many other MBZ cars as well as many Porsches.
This 230E is looking like it's going to be very hard to find parts for in the United States. The good news is that it's running, and is really a pretty fast car for a W123. I got pulled over doing 70mph in a 45 zone trying to get it home with a fuel leak at the rear.
The engine has good power and the interior is not terrible. The outside body has no dents, but it's been painted in flat black over an original dog poo brown. I plan to paint the car gloss black. I paid $500 for the car, got it running with ether, and it stayed running. So I aired up the tire and drove it home... with a gas leak, and a state trooper on my tail wanting to arrest me.
I need to know some viable information about it though. I'd like to do some routine maintenance on it, but I have no clue where to get parts for it shy of calling a MBZ dealer in Europe.
I need an oil filter, air filter, distributor cap, rotor, and plug wires for the 102.980 engine. I'm assuming the transmission is a pretty common 4 speed box. I haven't looked at it yet. I just bought the car today. Also how many quarts of oil it takes in the engine, and tranny. I'm going to put Denso T20EP-U plugs in it whether anyone likes it or not.
Thanks in advance for any information and please do add anything that I might need to know. I know about timing chains, etc, etc. Just looking for someone with experience with these engines. I've got plenty of local used resources for the 123 body.