Prothane body mounts

[kell490]

I bought the prothane 7-101 kit for my 67 shortbed can't remember where I got it now that I mounted the cab I cant get the bushing to fit it he holes for the radiator support the holes are too small on my frame. I could drill them out with a step drill bit but I'm concerned that will screw up the alignment of the fenders. If I buy the correct core support in rubber might not work with the prothane cab mounts. The instructions that come with the kit are generic for all trucks so I don't recommend this kit. I noticed prothanes website they don't have a tech support number to call either.