is this what i would need to replace my stock header bolts with? they say they fit an ls1
summit

 

Purchase the Breslin locking header bolts through Summit like I did!
I purchased the polished stainless steel ones.
Here's some info straight off Breslin's web-site:
www.go-breslin.com
Summit sells them cheaper than what they go for straight from the manufacturer.
Best locking header bolt I've seen!
Here's is what you need, 12: 8mm X 25mm, Part# 608-026

Jim

 

I have them also and they are an excellent product. You won't be sorry.

 

Hell of alot better than the Stage-8!! Alot less hassle too.

 

ive had a bad experience with headers, so i want to do it right

 

Well....then the Breslin locking header bolts are your solution.

Jim