How much is my 1999 chevy silverado regular cab worth?

I have a 1999 chev silverado blue in color regular cab truck with 93,000 miles. It has a vortec V8, premium sound system with GPS navigation, rhinolined bed, brand new carpet and mats, handsfree bluetooth audio. The paint is in average condition, there are a few minor dents/scratches. The tires have about 4,000 miles on them. I did a KBB but they only have the option for the extended cab version. Thanks!