Attempting my first build 72 K5

[sockalaminski]

That's possible but unlikely. The mounting holes in the crossmembers, motor mounts and tranny mount are small and round. If there were slots in the crossmembers, then it would be easier to misalign everything (also easier to line things up). One other possibility is the frame could be tweaked a little, with the right rail slightly forward of the left causing the cross member to sit crooked, but that's unlikely too.