Not being a jerk, but if you don't know how to inspect it, pay someone to. I believe that the book calls for 4.4 hours for replacement, in that case he is charging you $80 an hour. If you think he is worth $80 an hour take it to him. Any performance shop should be able to take care of you if you would rather go that route. I'm not from the Atlanta area but have dealt with Mainstream and Forged Performance and have been happy with both.