Here are a few photos of my old HKS diverter valve. I am still currently trying to determine if the flange is a standard item still used today, or if it is proprietary to this particular style of valve (I'm needing one in SS). I am also still trying to source a replacement diaphragm in the event this one decides to crap out on me. The joys of using outdated and obscure parts!
I haven't been able to dig up a part no. for this thing either. If someone happens to have some old literature or anything that gives a part no. for this part I would be very appreciative!
I plan to eventually have it powder coated (leaving the lettering bare) to match a few other odds and ends I've got underhood...
1970 240z Vin 000979. Got her for free! Took two weeks to get her running, now im restoring her the first time so I can have fun with the other stuff later. It may take awhile but it'll be worth it.