Thank you @PhilA for grabbing these Chrome Amber bulbs in Louisiana, USA.
Looking forward to getting them into the truck too.
Was in the garage today because I needed a bit of time after they announced redundancies to be effective mid February, and get is a waste of energy, so I went to remove some lights from the wall that will go into the carport until I get the planned LED units up.
Found this claxon style hooter in one of the C10 parts boxes. It may be fun in the S10
I also reassembled the front grille badge.
Looks OK like this.
Closer up.
Absolutely pleased with the outcome so far.