Welding it would be $10-$20 max.. If someone asks for more? try another shop.. I can even get a flange welded in the middle for another $30.. So $130-$140 shipped for a flanged stock ms6 exhaust? Shipping will be $50-$60 flange $30 so, can't go too much lower.. Also I have a set of just the stock muffs.. But, I doubt that helps much
And you wanna pull the corksport before you try to sell it, they'll cut the price big time if they know it's been modded.. Also you wanna sell the corksports for cash! They'll fetch $550 shipped or so..