My HP D30 was originally out of an 87 YJ. The guy that had the axle before me upgraded the left side axles and u-joint to the 297-x series, and i plan to eventually upgrade all the axles and both joints to the 297-x stuff. Is there any way i can tell whether or not the 297-x axles that are in it now are alloy or made by a certian brand like warn...just by looking at it? i.e. is it written anywhere on it? also, im going to install a detroit true trac in it, and i was wondering whether the ring gear bolts are right hand threads or left hand threads, i know the ones in my rear axle are left handed.