Mine had fenderwell headers too when it was drag raced only..Id of stayed with them but couldn't run a taller tire so I cut panels out of an old Valiant and patched up the holes cut for fenderwell headers and bought under chassis TTIs..I wanted 1 7/8 headers but TTI didn't make those only 2 inch and 1 3/4..I was afraid the 1 3/4 would have choked the engine down so I went with 2 inch..Id give a hundred bucks just to have a quarter of an inch clearance in some places..Looks like I will be dinging a header tube..