[Spridgets] 1275 Exhaust Manifold

[Dean Swanson]

I am installing a used 1275 in my Sprite and the exhaust manifold is missing
the three studs.

What size are they (Diameter & Length)?

I know one end is course thread and one end is fine thread.

Also, should I chase out the course threads in the manifold with a tap or
will this cause the threads to be too loose and the studs will fall out?

Thanks,

Dean Swanson

'62 A.H. Sprite mkII

(Hopefully to be on the road again after +10 years)