Upgrading 1965 Barracuda brake lights

Hey there, this might be a little off topic but, where is a good place to find 1965 tailight gasket set? We're getting ready to repaint my '65 Valiant and was looking to replace the old stuff, and by the way cool LED set-up, I replaced my 1157 bulb with a set of 1157 LED replacements small but still a little more effective..Thanks Brian.