Are the three bolts or studs fastened to the flange on the stock cat? I got one of the nuts off the other day but the other two rounded off. I was going to cut them off but didn't know if the bolts or studs were actually attached to the flange or not.

Anyone know?

 

pretty sure they are just bolts that are sliped in there they are not attached

 

yes they are! pressed into the flange... your screwed

 

That's what I figured since they are really rusted on but the one came loose without breaking.. No biggie... I was just trying to get the cat off to use on another b-pipe..

 

they don't come off...any test pipe will just use the 3-hole flange, then just use regular nuts and bolts.