stock exhaust....i wouldnt, it sounds too good and has nice tips, and for the straight six, a 70 series would be pretty quiet but throaty, 40 series is louder and more throaty, and i wouldnt go no more than a 50 series which would be probaly deeper with that extra chamber. ebay is real cheap. lets try that 40 series knock off i have first if ya want. i got everything to do it and some cold beverages. i'd see what series some of the other guys are runnin on their 300 6. the only reason i went with that rv towing 70 series is because of my cam, ported heads, y pipe and no cats.
we could forgive ya this time boss....lol it is quite a haul for ya just to hang out for a few hours though.