I used to have a Group A Nissan GTIR Pulsar wich I bought of a mate who used to rally it.
I bought it purely as a toy for the road and I can tell you that it's useless on the road

Throttleresponse is amazing and the way it goes through the gears is insane BUT it's a lot of work as you're constantly shifting up and down the box.
Fucking amazing booting it out of a corner on slicks though

Best rallycar I've been in has to be a Group B Mazda RX7, body almost entirely out of plastic and a 13.000 rpm revlimit
The noise it made was insane and so was it's driver