Bent muffler - 74 Suzuki TS250

Anyone got any suggestions for straightening an exhaust? The muffler on my TS250 took a hit with the previously owner and now has a crease shortly after the connection with the header. It's he muffler, not the pipe. Anyway, the exhaust only lines up with the back support.but the front support is about three inches out from its mount. It is a serious crease, bordering on a fold. The exhaust doesn't seem to be restricted, the bike runs great. It really grabs. But I'm afraid to get into any serious dirt with the exhaust hanging by only one support. Anyone have any idea how to straighten this? Or does anyone know where to find an aftermarket exhaust. The engine is completely rebuilt, down to the bearings and seals and a bore and new piston, and I think it deserves a good pipe.

Thanks.

What the the drawback of using just straight pipe? I could bend a pipe to fit. The main problem other tha back pressure would be shielding the pipe so it doesn't burn my leg, as I see it. How much does this motor rely on back pressure?