I have a 87 Chevy 2 w drive Dose any one make a bolt in ladder bar kit to replace my leaf springs I have seen a 4 link kit but it was something like 1200 and came with a lot of stuff I have seen ladder bars for the s10 for cheep I think they were 250 I might be wrong it was a long time ago. I know I will need shocks springs and mounts as well as a track bar but it is easer to buy these parts one at a time as I can afford it then to fork over a full 1200.  

i havent ever seen them for a c10  

Competition Engineering makes all the parts you need for this conversion.  The parts are as follows:

C2005 LADDER BARS
C2019 CROSSMEMBER
C2052 DIAGONAL LINK
C2560 125 LBS SPRINGS
C2770 (2) COIL OVER SHOCKS
C2046 UPPER SHOCK CROSSMEMBER
C2047 LOWER SHOCK MOUNTS

I have a 1982 shortbed c10 and this is what they recommended to me for the same conversion.  I havn't done it yet, because I am still building the motor and trans.  Summit sells all of these parts.

Scott