H&R is producing a 1/24 brass chassis. The axles are 1/8". The tires that come with the chassis are foam tires, the fronts are a harder compound than the rears. Natural rubber tires will be available as an accessory. The chassis comes with a 40k FK type motor. The wheel base will be about 3 5/8" to 4 7/8". H&R hopes to have the chassis available soon, when the chassis is released I'll update the news and where it will be available.