Here is SI's scouting report on McCargo before he was taken in the first round of the 2006 draft.
BIO: Three-year starter who posted 21/8/.5 in six games last year, missing half the season with a stress fracture. Posted career-best numbers of 52/14/3 as a freshman.
POSITIVES: Explosive run-defending tackle who flashes power. Plays with excellent pad level, wedges between blocks and is rarely off his feet. Possesses tremendous first-step quickness, makes plays out to the flanks and has a closing burst of speed.
NEGATIVES: Marginal pass rusher. Flashes hand technique but for the most part wired by blocks.
ANALYSIS: A hard-working prospect productive throughout college, McCargo's decision to enter the draft surprised many. Projects well as a two-gap lineman and could eventually develop into a starter at the next level.
NFLDraftScout.com ranked him as the number 3 DT behind Broderick Bunkley and Haloti Ngata. McCargo ran a 5.15 40 at over 300lbs.
From Adam Schefter (via PFT, tip to Sanders_fan89) the Colts gave up a 4th round pick. I like it.