Hooker makes a set of fenderwell headers that clears everything pretty well except the front tires. 6.95X14s are about as tall a tire as you can use on the street.
Don't want to cut the inner fenders, I have a set of the original 69
BB manifolds but I hear they are restrictive on the LH side I was planning to build a 472 stroker that would need to breath easy. just seeing if there any good options for headers