I am restoring a 1972 442 hardtop this car did not come with a rear air deflector on deck lid can anyone tell me if there is a template for the hole positions or has the measurements for the hole positions or air deflector position? Thanks

 

Page 180 of the 1972 cutlass/442 assembly manual has the measurements your looking for.

I'd scan and post for you,unfortunatley I'm not that computer savoy and don't know how