I bought Summit Headers back in December and now getting ready to install and checked the Summit site one more time and find out that they will not work with power steering with my 74 cuda. I guess I overlooked the footnote when ordering. Anyway, they will charge 10% restocking fee and I pay for return shipping. Summit advertises other headers without that footnote, how accurate is thier site? Can I get away with using the ones I have? If I order another pair, might I still have issues with fit even tho there are no footnote warnings?