Went to the local flea last Sunday and found a hardly used set of gpr stinger exhaust with db killer insert and pipe hanger off a Ducati something all by itself with a mixture of used clothes and shoes nicknacks etc. While studying the pipes figuring out if they would somehow fit the Connie with alittle mod I pawn star him down for $40 set. Wow what a deal these sell right now for $800. Went to the local welder and got rid of the squirrely input pipe and cut to straight pipe. Stuck them in with the hanger is adjustable. All I could say is the sound is killer deep tone and loud but with the insert mellow but deep. Got lucky with these. Check youtube gpr concours for sound clip. I know the Beemer rondel is annoying. Good hunting bros
