Do a search for MBC in this section of the forum, this has been covered alot before. It's a fairly simple install, but be careful.... boost isn't one of those things that "more is better" applies to. Read up on it alot before you do it.
Oh, and I reccomend the Hallman Pro RX Ceramic boost controller. I've used one on my DSM since they came out and it's been worth it's pricetag. Crappy $15 MBC's are just that... crap. I've also heard good things about the Joe-P.