Bout to install a used header question
 

I just got a used Gruppe S coated UEL header. I have new OEM gaskets and torque wrench. Ratchets, extensions, etc. But will I need bolts to connect header to overpipe ? Reading it seems the stock header uses studs ? If I do need bolts it seems like Grade 8 10Mx 1.25 x 35 is what I need. Are those available at local hardware stores usually ? Thanks any other useful tips appreciated.


22R

You'll probably have more luck at an auto parts store sourcing the bolts, though I have no idea what home supply store actually stock. They're usually softer.

The header I just removed has studs ('17)

any hardware store should have that stuff. you're on point with grade 8; you can go higher if you wanted to, but not necessary. As far as what bolt size/length; that doesn't matter as long as it's long enough and the nut screws on to the bolt properly and goes through the hole correctly. I personally would make sure to get stainless steel to avoid rust. I'd also grab lock washers so when you tighten them down they don't come loose.