I have a chance to pick up a brand new set of Hedman B & E body headers for 1/2 price.They are the ceramic coated 14ga 3/8" flange ELITE Hedders...very HD.I am wondering why these headers wouldn't fit a big block RB truck or RC? Anyone try something similar?I found many references saying yes...I just want to double check since with the ceramic coating I certainly don't want to bash them.I don't mind trimming frame rails ect. Thanks