Well thats interesting, I have the Borgeson box and the Bergman coupler and the D450 Dougs in my 66 and they fit fine, no contact with the headers at all. Been in there for 4 years. What engine mounts are you using?
I'm using Shumacher mounts on a 340 block.
Ding! Your post caused a bell to ring! It just occured to me...my engine/K frame and suspension are sitting on a home made cradle where the K frame isn't level. Of course that would affect the trajectory of the steering shaft out of the steering box and may have caused the clearance issue.
Thank you for your post and confirmation that it will work. Peter Bergman was surprised about the fitment issue also!
