I put l.e.d. Lights in the red marker(?) lights in the rear of my '87. The lenses appear to have been bleached by the sun so I took one off and marked up the inside with a red Sharpie, I like the result. It might not last forever but it was a very cheap fix.
I also solved the gas leak from the peacock by taking it off and adding Sealall at the joint, let it sit overnight and no more leak!