how hard are these to put on? can it be done with simple hand tools, or do i need to use an impact wrench? i don't have access to one of those, so if i don't need to use it, that would be great for me.
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.