67-72 4x4 engine crossmember

[chevroletrucks]

Hi all, Looking for pics and possible availability of a complete engine crossmember assembly for a 67-72 4x4 sb350 with perches. I have a 70 K20 that someone had put a later drivetrain (73-80ish) in and used later model mounts. Its kind of a screwed up deal I'm trying to straighten out but with the incorrect perches and a homemade lift kit the engine is raked at a horrible angle and it isnt right at all.