There's not been a 4wd pan car since the Kyosho Fantom
and AYK CX from 1984.
Dirt oval cars are basically buggies with short shocks, turning them into a wide touring car which is what we used to race on road before the modern touring cars came along. Get a 4wd buggy and a set of touring car shocks, make up some new shock mounts and there you go.
If you want a 4wd dirt oval car, there's the Customworks Dominator.