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Hooker Fenderwells Yet another solution for bigblock A-bodies is the Hooker fenderwell header. Although tire clearance is a major complaint, they get good reviews for their performance potential. They can be had in 1 7/8 X 40 X 3.5" or 2 X 43 X 3.5". The headers shown here are the 2" tubes on a 440. According to Hooker, the 1 7/8" tubes clear all stick and column configurations, and also allow power brakes. The 2" tubes only allow floor shift applications and manual brakes.  Both versions do allow power steering. Hooker also states that they will bolt onto BS heads, but the exhaust ports are 5/8" higher and 3/8" further out, causing interference with the shock towers. A fair amount of modification is required in that case. The B1 head on the other hand needs a custom configuration, due to problems with the angled plug locations. Of course, Hooker recommends their own header kits to solve this problem.  A substantial portion of the fender needs to be cut out for these headers. You can also imagine plug access isn't the greatest. Although it can't be seen here, virtually every set of these headers have black marks on one tube. Tire clearance is minimal, even with smaller diameter tires. If you care about tire size and turning radius, these headers aren't for you.