@Impala posted:Turns out that I could use dual filament 1157s and single filament 1156s on the tailights. I couldn’t find the miniature 97 bulbs for the license plate and backup lights on the Silverstar line because they don’t make them. I tried to optimize the license plate lighting by painting the inside if the housing with “chrome” paint. Still not sure if it made a lot of difference but we tried.
Back before Silverstars were widely available in the states, I used to order them from PowerBulbsUK. John is great to deal with and he often has specials like "Order a pair of H4 bulds and get two 5w festoons free." Now that carry they them in most auto parts stores, I haven't ordered from him, but I bet he would have those bulbs. He also shopped free via Royal Mail and I used to get my bulbs in about a week.
ETA: I looked and didn't find Silvestars. I did find this, though.
https://www.amazon.com/SYLVANI...-Bulbs/dp/B000G7ALD8
You might try emailing John, though. I'd bet he has them (Silvestars)