Help! Doug's headers in 67 barracuda

I know this thread is about Dougs, but TTI says the Borgeson mounting holes must be elongated to .81 inches so the steering box can be moved away from the engine. This is for G3 Hemi swaps in A-bodies but could work here (Note #12 in their fitment notes).
Also some guys elongate the holes in the firewall plate to move the steering shaft away from the back corner of the left hand hemi head. (#7 cylinder)