The tires and wheels are the HPI vintage ones that the rules call for. You can find the rules at USVTA.com. Not sure on the motor and gearing yet. We were just running a mild 27 turn brushed motor for testing. The rules call for a brushless 25.5 and my experience is that a FDR of around 4.0 is where you want to be. I don't know if I can get to 4.0 with this car so we may use a 21.5 and gear it at around 5.2.
I think that one of the things that makes this chassis good for VTA is that the spec tires like some weight on them. All that weight on the front tires made it feel like a slot car. We may end up adding a little weight to the back of the car in the end. The weight limit for VTA is 1550mg.