Starter motor bolts - what size?

Could someone let me know the correct size for the 2 starter motor mounting bolts for the Twin Cam?

The old ones I have are different sizes - not sure if this is by accident or design!

Thanks

Richrd

Hi Richard

Try a 3/8" by 1 1/4" UNC bolt with a 9/16" head.

             Gary

Thanks Gary

Richard