Yes, though a muffler is easy to make from the original and save the money on that. You just pry apart the muffler, take out all the guts, and then drill the holes and weld in outlet tubes. If you got it all ready to weld, a welding shop would probably weld or braze the outlet tubes in for you quite cheaply. I make most of my mufflers this way, and if anything, they actually weigh less than the aluminum ones you buy.
AV8TOR