[bigblockv6]

Mark, I'm very well aware you don't have the power assist o your 67. I brought that up because frames were not stamped out with the contours to accept the saginaw steering box on 67-68 GMC trucks and power steering really wasn't available until 1969 on 4wd models other than a power assist option on 4wd model very late in 1968. This is why spacers have to be used to mount the power steering box, i'm nowhere near my triuck at the moment but from what I recall your existing mounting holes will not line up so new holes will have to be drilled. Using soe kind of clamp setup is a bad idea for the fourth mounting steering has alot of force, you'llbe asking for problems as this is a serious safety issue. I've seen a lot of cracked frames in these areas on 73-87 GM 4wd trucks. The power steering box was designed four 4 mounting bolts so it needs to be kept tht way.