Re: 68 Firebird convertible with JL8 Rearend? On Ebay
a BR axle is a 68/69 3.07 12 bolt posi axle, it's did not come equipped with JL8 brakes. A PR axle is a 68 12 bolt posi axle with 3.23 gears (as stated in the ad), it also did not come with JL8 brakes or rotors. Someone added the calipers and rotors to it.
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