My 2
everyone ive put in since their first one they released has been painless and cleared the springs and the axle , if you have aftermarket or adjustable uppers arms theres more room to move the pipes away. its almost a direct copy of the hooker system
ive heard others had theirs done at local garage shops and they claimed the install was difficult (read $$) and required modifying pipes to install
only modification ive found would be to trim the pipe lengths at the mufflers back about 1" off the ends because out of the box assembled its too long unless youre making a test pipe custom length
and the race mufflers seem to sound the best , the srteet was too queit , havent tried the violator