Basically when I spoke with TA they told me they would build me a set but if they didn't fit, they wouldn't issue a return. Building any type of Mopar is costly enough to start taking chances on $900.00 headers that may or may not fit.
For some reason I didn't see you wrote TA (Tubular Automotive) instead of TTI - I apologize for that!
I still have a hard time believing they would fit a Demon and not a Dart???
I hope you're happy with the TTI - I have no complaints as of yet.