I think Kazmir will be great, but he has to harness his control not only to lower his WHIP, but also to avoid injury from throwing too many pitches. In terms of stats:
2006- 190 IP, 200K, 4.00 ERA, 1.33 WHIP
2007- 200 IP, 220K, 3.50 ERA, 1.25 WHIP
Zito is God: The Devil Rays averaged 4.63 runs per game last year, which is near AL average (4.76). If Kazmir can lower his walk rate, he will probably win 15 games. The Rays were bad last year because they gave up 5.78 runs per game a full run above league average.