A non-rally car that is good for rallying? The Homologation moddels of the Group B cars!
Peugeot 205 Turbo16
Audi Quatro
Ford RS200
Renault 5 Turbo
Lancia's and Toyota Celicas.
All these cars can be tuned to be real bests if wanted, and my favorite, the 205 Turbo16 is a hell of a car(IMO).