Installing 1972 340 manifolds 3614368 (driver's side) and 3418623 (passenger's side, center dump) - Any Exhaust Pipe Clearance Issues to be Aware of?

thanks for the info on the mod.
BTW.....Just a heads up. I bolted and tightened down the pipes then attempted to modify the rod. I messed with that thing for a while and had difficulty making it work without interference. Then, I loosened off the mounting bolts and that gave the pipes a little lateral movement. After that, it was eezy peezy. Morel of the story....Don't bolt the pipes down solid until you modify the rod...It would have been very easy had I did this first.

You can check TTI's web site and the modification instructions are there. Nice pipes BTW.