I have a '91 GMC K5 with only 54k on it. Vehicle is in great shape inside and out, fully loaded. I am looking to install a 4" or 6" lift. Which brand do you guys recommend? I have shopped around and prices are all over the place. I'm just looking for some insight. Can I do this for less than $1500? If not, it's going down the road. Thanks in advance everyone!