How well do early A TTI header fit?

Thing I do like about the TTI early "A" header is the 3" collector vs the 2.5" that Dougs Headers use. There is just not much room in the early A's, both companies did the best they could for the room available. There's always the fender well header option, but of coarse those have their own set of draw backs like limits on front tire size, low hanging exhaust and cutting up your car.