[scaleslotcars]

No problem with having contemporary classes, personally I would not enter a rally or saloon class meeting (if I wanna see hatchbacks I can stand at the end of my drive!)
but anything else is ok for me.
My favourite would be the eighties turbo F1 cars (although I think these are already actually catered for) with a minimum rpm, 40K?, motor rule so they would be overpowered, just like the real thing