how can i tell a repro rear wing from an original rear wing for a 70's cutlass? i have one without the mounting stands. my buddy had it for years and years,and i've had it for a few. can not find any numbers. help

 

Edge view of the horizontal main wing dimensional thickness is noticeably thicker on a re-pro vrs. an OE from 1970 Its there in the pedastals width as well but hardly noticeable on those two pieces. The edge view looking forward its very thin on a original eqp compared to the re-pro .

 

Originals have 3 threaded mounts on each side not 2