Phil.....I have at least one Fuel Pressure Regulator that has failed and am saving that so I can use a Delphi FP10023 once you have proven the concept.
I assume your machined ring is outside the Delphi flange and if you were to sell those machined rings I could use that as a template to drill and tap threads for the Allen Head machine screws
How did you remove the present Fuel Pressure Regulator Mechanism from the Aluminum Housing so as not to damage the compatibility of the Delphi to that original Fuel Pressure Regulator Housing?
Your research is superb and if this works out and you were to sell the machined rings I am in for at least 3
I will pay a premium if you tell me how deep to tap and provide the screws
All kidding aside (I am not kidding about the machined flanges).....Phil....this is great research and your machining capabilities are the best....
Thank you for all your contributions over the years