Looking at putting 2.5 inch Magnaflow high flow cats, x-pipe & round mufflers on my 2010 Challenger 5.7 Rt.
Will the stock rectangle tips accommodate a 2.5 inch exhaust pipe?
Anyone have any experience with this same type set up?
No experience with that setup but the stock exhaust tips are a ball (tailpipe side - see image below) and socket (tip side). The clamp squeezing the joint is tack welded at the top of the tailpipe. If the magnaflow has the same ball end and the distance from the hanger to the end of the ball is the same the stock tips should be compatible.