70 Duster 440 Swap TTI 2" Header fit

Vehicle info:
original 318 car and Xmember
Edelbrock RPM Performer heads,
manual steering
318 to 440 swap
Swap kit is from Classic, but appears to be identical to the Schmacker kit that is installed in my brother in-laws 71 440 Scamp (He is running factory exhaust manifolds).
The problem I have is the header is hitting the steering box. To make the header fit I will have to put a large dent in two of the header tubes I bought the TTI headers because everything I have read says they fit. Has anyone had any luck getting the TTI headers in without modifying them? I can post pics if that will help. I just spent a lot of money for the TTI headers and really don't want to start putting dents in them to make them fit.