man, that knob added at least 100 lb. ft and 50 hp! it was like putting in sticks!
it's made by greddy. i had it on one of my mitsubishi's a while back. it's threaded for 10x1.25 so i tapped it for 10x1.5 so it will just screw on. i think you can ask for one pre threaded with the right pitch if you order new.
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