Do M12 to M10 step down exhaust studs exist???

[40Flipper]

Howdy kids!

I replaced my F with a 2F and I am trying to get the old F intake and exhaust headers to fit. Trying to keep it somewhat 'period correct' looking by keeping the valve cover, intake, etc..

The older F manifolds have M10 stud holes so I would have to drill and grind a bunch to get them to fit the fatter M12 studs that are popping out of the 2F head. I'm not super skilled with that so wondering if there is an easy shortcut.

I googled the googles and I can't find any M12 to M10 step down exhaust studs. Do they exist?

Anyone have any magic? Any easy hacks to get the old manifolds to fit?

I could sell what I have and buy a 2F setup but these would save me money and time.

Cheers!! John

 

[Steamer]

About 20 lines down

Manifold Stud, 12MM X 10MM, Stepped

 

[40Flipper]

About 20 lines down

Manifold Stud, 12MM X 10MM, Stepped

FJparts doesn't have them. I'll keep digging now that I know they exist

 

[Steamer]

$$$ but here's another listing. "12mm to 10mm Stepped"

 

[40Flipper]

The guy from FJparts had them listed on his old site but he doesn't have them. He said that SOR.com is the only place that has them.

Called Specter and they made a special run of them. sor.com I couldn't find them listed on the site but they have them.

$15 each but I happily ordered 6 as its way cheaper than new manifolds and paying my exhaust guy to marry everything together.