Thanks for the comments guys!
While waiting until Monday for the new tail light wires to arrive, I did a few updates on the interior. I’ve decided to stay with the red metalflake steering wheel, so I went back and stripped the GMC emblem on the dash and repainted it red. It turned out perfectly again. I also added a 2 gauge Eelco under dash panel with the external top center light source. The right gauge is currently the vacuum gauge for the brake boost chamber, and eventually the left gauge with be for transmission temperature.
The new 2” white 4 speed knob also appears in this photo, along with the original style disc brake pedal pad.
