Recommendation needed for add on turn signal system

[ilangford]

1930 Model A Deluxe Coupe; 6 v positive ground system.
I want to add a reliable turn signal system.
Would prefer one that incorporates existing cowl and rear lighting if anyone makes such... (trying to keep this car somewhat 'original')
I already switched headlights to LED, wow what a difference.
Any source to replace the cowl and rear light blubs to LED as well?

Thanks for your time!

Ivan