I have the same car as yours.
https://www.ledlight.com/6-volt-posi...ed-lights.aspx carries a full line of LED bulbs. I have amber 12-SMD LED bulbs in my cowl for turn signals. I changed headlight reflectors to 2-bulb and added wiring for the parking lamps. Soft white bulbs for park & tail, 30-SMD red brake bulbs shine bright red through the amber lenses.
There is also a mod from the vendors to change the cowl socket to double contact for use with both park and signal, but I don't like it, myself.