i have hookers that are wrapped and its a ***** to change the spark plugs and my car sets kinda low so ofcourse they drag on everything where as my friend has a set of TTI headers on his dart and they fit like a dream never drag no trouble changing plugs i dont mind spending two or three hundred more dollars on a problem solver these hookers were 400 and i have just ruined them from draging so much and the flanges are thin so they have leaked from day one i can preach it day after day you get what you pay for