340 adjustable LOCKING rocker arm kit

4spdragtop said

Whe I click Amazon link I get "currently unavailable " must be cuz I'm in Canada?
I see nothing that gives thread size?

Click to expand...

Right, it is confusing on the thread size and I would VERIFY first, but surely one is 3/8 and the other is 7/16. What sense would it make to make two sets of 7/16 with different part numbers?