Im making a custom exhaust and i could find 1.5 inch piping and a flange but i cant find that little lip that actually keeps the flange on from sliding off the pipe, where can i get one of those or just piping with it on.

 

are you talkin about the flange were it bolts to engine? i think you would eather need to find a slightly larger pipe and cut to sise or just use the first couple inches of stock pipe.

 

If it is exhaust pipe you could just take it to a muffler shop and have them flare the end for you.