New camaro steelies with M12-1.5 studs, lug nuts?

Wow did I just find a HUGE problem with my set-up!

Got LONG ARP studs on my new hubs so that I could use a less expensive spacer instead of an adapter and they came M12-1.5, which is great because you can get so many different options in lug nuts, figured it would be great. EXCEPT, I want to use the stock center caps on my steelies, cause they're cool, and the stock lug nuts are M14 something. Now I have to find the correct lug nuts for M12-1.5 ID threads and the OD threads for my center caps.

HELP!

So you're looking for the OD thread that is on the factory Camaro lugnuts that the center cap lug covers screw onto?

Yeah, it's 26mm OD as best i can tell, instead of the 22mm of the 12mm lugnuts.

Part drawing for the caps says the thread is M27x2.

Does the catalog have a lug nut with 12x1.5 inner threads and 27x2 outer threads per chance?

Might have an option, found some washers that I'll have to bore the ID slightly, but the OD is perfect, then can use the plastic lugs from late model impalas, in black, with the washer painted black. They'll be smaller than stock, but will fit and retain perfectly. Gonna set me back another $50 plus the time to open them all up.

Does the catalog have a lug nut with 12x1.5 inner threads and 27x2 outer threads per chance?

Don't really have that kind of detail, unfortunately.  Easier for me to look up parts for a vehicle application than finding by specs.  They're all buried in the drawings or some super top secret database I haven't found yet haha