[bigblockv6]

Funky61 you're right about the instructions, the old GMC accessory literature mentions that. Prime examples of mounting correctly are 1960HDGMC and GMCNUT whose bezels are cut out for more chrome and gauge face to show, page 18 of the 1966 GMC Owner's Manual has an illustration of this showing the whole dash for purpose of AC controls. I have found another way of making the clock sit more forward by removing the chrome bezel and mounting it in the cluster without it to make the adjustment knob easier to access, I'll post some pics later.