If you can’t buy it....MAKE IT!!

I agree, although tapping to 1/4 NPT was certainly considered. I also am not comfortable doing anything to the threads while the engine is assembled since there’s no way to catch the chips. Yes, I could “flush” them out, but there’d be no way of being 100% certain I got all of them.

MoparMike1974 said

If you want I can make you up a fitting on my lathe. I would use a piece of hex stock. No charge.

Click to expand...

That’s a terrific offer! I might take you up on that. Sending a pm.