He probably is losing a little unless that 350 is really built. However is it worth the 250 bucks? Not in my opinion. I dont see why it should cost that much to change tho. Exhaust pipe is fairly cheap. Take the old pipe and have someone bend it to the same angles as the old setup (take off the old setup and bring it with you, you'll love the open headers lol). Im sure you have to know someone who can weld! 250 bucks sounds rediculous. I did an exhaust system on my longbed truck 2.5 all the way with two flowmasters for 210 bucks. On one hand I did all the labor but you already have the mufflers. $30 bucks for new flanges, and maybe $50 in piping. Shouldn't take more than an hour to do at all and even if he charges 65 bucks and hour that leaves you at $145 bucks.
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