Does anyone make a in cab cage kit that can be put in a 78 k-5 cab? I have called every catalog that I have and everyone says that they don't have the smitty bilt in cab cage kit for my year. Four wheel parts said that they dont have it either. I have seen these in blazers and trucks the same year as mine but nobody can give me any info as to where to get one!!!! HELP PLEASE!!!!!!!!!!