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I have an opportunity to pick up some low mileage big block headers for an E body. I have a fresh, near stock cam, 4 speed, aftermarket carb, standard compression 440. I probably would have thought the 1 3/4 inch would be right, but these are 2" diameter. Thoughts on suitability?



you should be good to go with a standard trans a+.
you didn't mention the gear ratio of the rear end?
you could also grow into them!