Starting up a product
I would look into the year car that cutoff production of stock dashes.
I would look at number of car registrations of that type car.
That will give you the size of the market for your dash reproductions.
Otherwise it is pointless to make them for cars that few people own.
Make one, take pictures, sell it over ebay. make another one and sell it.
When you have sold ten over ebay, get back with me and we will
talk about taking the product to bigger markets.-Bob