Lowering a Colorado zq8

i'm tryin to find a good lowering kit for my zq8 rado. bell tech and ground force make a 2/3 kit but that will only lower it a 1 in the fron and 2 in the back cuz it's made for the z85 2wd. i see djm makes 3" lowerarm's and a 4 " block. i was think bout that yet i know and heard of people that had problems with DJM quality, just seein who as all lowered a zq8 rado, and opinions on djm products

Thanks Cal