need advice with a lift kit
 

I was given a RCD 6' lift from a 2003 chevy silverado 2500. I would like to know if anyone could tell me if it would fit on my 2002 chevy silverado 1500. I know it would make my ride stiff. I was told by 4wheelonlines customer service that the bolt patterns would not match up. If anyone could help it would be greatly appreciated.