WTTM. It's a great looking car! As already mentioned, get the bottom of the engine compartment sealed up so spent cooling air/heat from the exhaust isn't being sucked into the fan and carburetor. If you don't know- the extra heat could cause the engine to run hot (as I see Jimmy already pointed out, and my apologies for pointing this point if you have experience with aircooled engines/cars). You'll have to make something up (a piece of aluminum would work and be nice and light) with an engine seal from a bus to make up for engine movement.
A black Speedster (who doesn't love a black Speedster?) with a cream or white banjo wheel/steering column and proper reproduction gauges would look sharp! I hope you enjoy your car. Al