Got my new stainless Delkevic headers in the mail today. Collector OD is 2.5", ID is 2.25". My current muffler is 2.25" OD. Womp.
So what I have is a slip-IN rather than a slip-ON.
Would this still be ok if I clamp it? Is there a exhaust-capable liquid gasket maker to avoid leaks (yes, Permatex Ultra Copper)?
Should it be welded? Or should I have a reducer made up so that it is still a slip-ON, technically (least fav option)?