Let me share the info, I hope it has some merit in case someone else needs it.Here you go:

The subframes from 67-69 F-bodies and 68-74 x bodies are the same. That includes Firebirds, camaros, novas, apollos and venturas. BBC's, SBC's, and BOP engines can all be used with the engine mounts being the difference in swapping from one to the other. Suspensions parts from 67-72 are all identical with the pitman arm being the difference based upon manual or power steering. 73-74 steering components for some reason were changed around on the x bodies BUT anything from the earlier years can be easily used to "convert" it to the cheaper parts if you swap it all out. There must be something crossed or messed up in your parts because the 67 stuff WILL work with anything from 67-72. hope this helps