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Yes the STX Arrow will fit on the 2 degree Crankshaft
A crankshaft sensor senses the engine revolutions to basically tells the the car when 2 inject and ignite the fuel
the Spanish word for crankshaft is 'cigunal' and the u has 2 dots over it and the n has a squiggly line on top
idk ive never had a crankshaft but i dont think it would fit so good cuz i mean look at the k18 they have crankshaft heads for a reason.
NEAR THE REAR OF THE CRANKSHAFT. IT CAN BE SEEN THRU THE CRANKSHAFT SENSOR HOLE WHEN REMOVED THERE ARE 2 DIFFERENT ONES 16 & 32 TOOTH