I don’t own a miata hardtop and that is terrible. I don’t know anyone who has one. I don’t want to pay $1k for a used one. I want to make one out of aluminum.

Is it a bad idea to use a model car say a tamiya 1:24 model to scale up the hardtop and make a buck to produce my own?

I don’t know much about models and assume they just scale down a fullsize car.