FRPP Stingers?

you should be able to do it without power tools. you might need a 1/2" ratchet for leverage to tighten up the clamp, but other than that, its easy going.
 
I just installed the FRPP/Borla axle-back and it took me about 1.5 hours doing the job by myself. If I had another set of hands, it could be done in WELL under an hour. I used a 15mm deep socket on a 1/2" drive, and a 13mm socket on a 3/8" drive, and a 13mm open end wrench.