Here is the before pic with a 10 bolt and monoleaf set up (original) and the way it looked this afternoon when I drove it with the 12 bolt with multileafs and freshly painted Lakewood traction bars.. The car is starting to show some attitude.. I never looked at the code on the old rearend but it must have been very high (lower numerically) because the 3:73's really woke up the stock engine. It was as if I dropped a different engine in the car... I dig it .