I have had a few sets with and without the third progession holes.
I know the guys you speak of, and those guys all have fast cars, but they dont drive them around really. I drove 48's around so the hole helps. I like a 2275 size. Case is still strong at that point.
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exactly! real fast (11s or quicker), real pretty....driven once a month...maybe....to the meets haha. my neighbor belongs to DKP. Hes on the fence about third hole....has heard good and bad. another guy, you may have seen on youtube in a early black bug doing donuts...show casing the quaife limited slip(mark herbert), he had 2275 in that car with IDAs... old school street racer, preferred the two hole (dont we all

) for racing....but was ok with third hole for streetability(if done right). this guy also had the car known as the super shit box. basically a tin can with a beast under the decklid. pretty quick, spare all expenses on looks. car sold to someone in england.
your engine going in a bug?