Can someone please tell me how to id rear leafs for a gen 1, when the slapped bar is already removed. Is there an F3T... Stamping on the leafs somewhere? Also how do the gen 1 leafs differ from the gen 2 leafs other than the slapped/traction bar? Also is the gen 2 rear axle housing like the gen 1 except axle length and bolt pattern? Thanks in advance for any help