Searching for quality woodworking patterns

I've been trying to find woodworking patterns for classic cars but haven't had a lot of luck. Does anybody know of any place I can find any? There are a few standard plans available from a web-search but I'm looking for something I can alter and experiment with. I did the above from a very popular plan, the only good one found (so far).

I have a few vehicles I'd love to find in a pattern but any classics will be appreciated. My preferences would be a 28-30 Ford Phaeton, a 1936-41 Ford coupe, an early Stutz Bearcat or a 30ish Packard. Good quality plans are very scarce. I see a few Stutz patterns but none are very realistic looking. I'd also be interested in a Stanley-Steamer plan.

Thanks-
Tony M