Header fitment rant, Doug's

I bought these fasteners, 5/16x18x1" at ace hardware.

Will need to use a ball end allen wrench for the outboard fasteners. Not talking about the studs on the ends, those are going to stay for now.

I asked for help regarding best bolt type and size, where to get them, zero replies.

Reminds me of the grouch at the machine shop, he needs to retire.