The bottom Header bolts....what size/thread?

[OrangeMustangGt]

I need new header bolts because mine stripped out, for the header to h-pipe connection. My question is what size are they? are they metric...what is the thread? thanks

 

[OrangeMustangGt]

hmmm i gotta goto the hardware soon.,

 

[1105]

Pull one of your old ones off and take that into the hardware store. They should be able to match it up with a new one.