could any tell me where a good place to find a 3 inch suspension lift for a 2002 sonoma crewcab.

thanks.  

roughcountry has a 2" susp lift for $429 and a 2" body for $208
trailmaster has a 5" kit but no price at this time
i would go w/trailmasters lift, its probably the same price as rough country 2 lifts  

I have an older version of your truck that had a 3inch rugged trail body lift.  It worked well for 31 inch tires but would rub the tires in a bump turn.  Then I saved up some money and added the trailmaster 5 inch suspension lift and 35 inch tires. They will rub under rough manuvers, Eventhough the fenders are cut back.  It's difficult to make a 3 inch lift because the rear axle is a (spring under axle mount).  If you mount the springs on top of the rear axle, you get a 5 inch lift.  I've seen a few s-10 sonoma's with 5 inch trailmaster lifts with 33's that work well.