New R4 Car - Think Tank

[OldF]

I have a question btw. Is it possible to use used cars (as long the model is same as the new one), or even the older model, or is it must be a new one?

I don't think it has to be a new one. Specific regulations for cars with R4 kit http://www.fia.com/file/58633/downlo...token=mPk3dYbt