Black99Silverado

I have a 99 half ton and i installed the catless ypipe from jegs when one of my cats got clogged. I am having trouble hooking it up to my magnaflow catback. Seems the ypipe has a smaller opening than the catback system. Anybody have this problem? How do i fix it without welding,as i would like to keep it bolt on in case of emissions reasons. The one end is flat and the catback end is tapered but not enough to seal and i have a exaust leak at the seal. Any help would be great because exaust leaks drive me crazy..

StrokerAce03

iTrader: (7)

I didn't have any problems with mine and that was bolting it to an aftermarket 3" intermediate pipe. I did put some copper seal on the flange though too. I did have to play with it a bit to get it to line up properly though.