It wasnt 3 sets of headmans, only two, the first was set#1Summit name brand they hit on the steering box,, I call summit ask it I wanted my money back or another brand header,, I gave them about 50 dollars more for Hedman set #2 part number 78036 well the brivers side hit not only the steering box, heck ithit everything so , I called Hedman and talk to a teck , told him the car 70 ect,, part number that summit sent, he said it was the right part, I told him no somthings wrong , then he put on hold for a few min, when he cane back on phone , iv got a nother header #3 for the drivers side im sending it out,, I ask what what you think this en is a bad header? He Sa id no just that he sending a nother header,, header #3 went right in no trouble,, now it does have a different part number