CobaltVenomSS

iTrader: (2)

i heard the stock bolts and ZZP downpipe is a no no....so what bolts can i buy at a hardware store to replace em?

M-Dub

I thought you were gonna sell it now?

CobaltVenomSS

iTrader: (2)

not for now..keeping it

eastcoastz

If you are trying to bolt a zzp 3" flange to the stock cat back yea, but the manifold to downpipe is the best fit I've seen.

CobaltVenomSS

iTrader: (2)

i meant that the bolts break off easily

jwolf8604

grade 8 1/2 inch. when I started the big thread on the bad bolts...zzp changed it to where they shipped with even bigger bolts (it was the second time that they upped the size). find out what size bolts you have. I bought some grade 8 1/2. cause man, if they do break then it will break the gasket more than likely which = exhaust leak until zzp can send you another gasket (not to mention you will still need bolts and then you will probably want to be safe and get grade 8)

So, just bite the bullet and get 1/2 grade 8 and be done with it