Playing around with a 90 or 91 we turned up the fuel screw last night and it seems a little better although it did not seem to have the runaway condition even with the screw all the way in?????? Anyway I found a list of pump mods to do tonight!!!!!!!!! Is the GSK the same as the P-pump trucks? Also where can I find one for this truck? Also looking for a fuel pin any reccomended vendors? We are just gonna play with this truck for a while then its headed into a Crew cab Chevy that my buddy is building. Thanks for the help guys.