i just did the whole slp package this weekend, headers,x pipe,catback...on a 02 sstang gt...total time was about 13 hours, drop the whole entired front suspension including k member...search for my thread about header install any tips and theres a link thats a excellant write up on it...and if you put everything back correctly you wont have to get a alignment...i was done and took it for a drive, steering wheel was straight and car drove straight...and all this was done in a driveway with jacks,jack stands and hand tools...be paitnet and have fun, oh and when dropping, and installing the k member, it is much easier with a buddy, i did it bymyself, killed some time, but its not that bad