Hey Guys , I was just searching down what lift I am going to put on my 1990 Burb build , I'm going 6" most likelly Skyjacker .
My truck is a 56" rear spring truck , whats the deal with 73 to 87 then they have 88 to 91 but do not list the 88 and newer with a 56" spring .
I am installing a Dana 60 in the front and a 14 bolt in the rear ... would the 1986 k30 kit work for the suburbans , they have the 56" rear spring and will come with the right size u bolts .

Thanks

yea you can do that. as long as they are 56s

are you sure they are the right u bolts? i got a kit for a 86 k30 and they sent me the squared off ones like a stock k30, i had to get another kit so that i could flip them over to the normal style, i didnt know there was a difference untill then

The front spring bushing use a 1/2 bolt at the shackle ,the older ones have a 7/16 and the ubolts are square and point down.