Pulling Engine/Trans over the winter....Header Question??

The first two sets fit well I really liked them ! ... the first set I bought used many many years ago when they wore out I purchased a brand new set also many years ago, they eventually wore out also so I went to TTIS ( I don't care for them ) I purchased a brand new set of Tubular Automotive headers 2 years ago , had them coated to the tune of $1400 total invested and they fit poorly : they hung so low I couldn't get the car in my trailer , one tube hit the steering so hard it made a hole in the tube and I had a really hard time slipping the collector on the tubes during installation . I called them , they repaired the tube no charge and couldn't understand why they didn't fit after having two there sets. They wanted me to bring the car up to see what was wrong but I never did and I went back to the TTIs. I sold the Tubular Automotive headers.
I run the 1 7/8 TTI's.
Only because you can no longer purchase the Headman Hustlers.
Tubular Automotive told me that their header would fit a 71 Demon but not a 71 Dart.
I didn't feel like arguing so I left it at that.