As far as timing covers, 96-99 are 3 bolt and the 00-04 are 1 bolt.

Honestly, i'm not as informed on this topic as i'd like to be. Hopefully we can get someone in here who has done it before. I know some guys are saying its harder to do it with a procharger vs another centri. Others are saying easier/harder with the different timing covers because of tensioner placement and finding the right pulleys.