Bob,
If the 3.07 meant you also got the D44 thrown in, for $50, that definetely would be one of the best options that I know of. Today for $50 you get the extra paper floor mats :( :L
ub2, G44 means 3.07 and G92 means performance axle, which is 3.07. confusing no? i have option letters on mine...