Flowmaster super 44's? If that's the muffler you need, then they most certainly DO have it, but not in a transflow design. They have it with a single to single or a single to dual out on the opposite side. You need a out/in on one side and then single out on the other, they don't have that but that doesn't mean you can't use it. Here's a link to flowmaster's online website, there's three pages to look through I'm sure you will find a muffler for your size inlet/outlet if you're running stock exhaust. The only modification you'll have to accept is that either you'll have to change over to a single pipe after the muffler, or use a dual exit muffler and run a new pipe back over to the other side since initially both out ports are on the same side and you needed one on each side.
http://www.flowmastermufflers.com/sh...ath=34_218_224