Here we go guys. This is just my opinion. There are certain features that a car has that say "I'm a speedster". A T radiator shell, the "bomber" seats , a round or oval gas tank, an abreviated cowl, a tool box and wire wheels. The only one of these that might have an option is the wire wheels. Some of them used the Chevy artilery solid wheels. if you look ae the pictures Fred posted, or at the nwvs web site, you'll see they all have these features in some fashion.
Now to get to the car a rodder might build. We're talking up grades here, right? The shell, tank, cowl, and tool box will let everyone know this is a speedster. The chassis is where you can let your imagination run wild. Late model engines and trans missions will make the car many times more servicable. To this we can add dropped axles, later wheels, and a few creature comforts such as 12 volt sparks, better brakes, better lights, etc. As with T buckets, we want to build a safe and relieable car.
I was involved in a build a couple of years ago where the theme was to build a low, low buck speedster or hill climber out of a Model A. A chassis was found with a barely runinng engine for $750. To this we added a '29 cowl, radiator shell, the top hood pieces, a pair of VW seats, A lights and a gas tank. With all of that and the repairs that were made, the total build was around $1500. That was it! I'm here to tell you, we had more fun with that car than a sailor in the Phillapines with a pocket full of money.
Ron