Everywhere where braking and cornering is involved any modern WRC will wipe the floor with GrpA, B whatever you throw at it that is more then 5 years old. Also Grp.B car fitted with modern tyres would have massive brake problems, compared to even modern Grp.N cars they didn't have any brakes at all.


Grp.B stage times were first beaten by late Grp.A cars in Celica S205 time, todays Grp.N cars are faster on those stages then Grp.A ones used to be. You cannot cheat 20 something years of technical progress, and even with restrictors WRC cars still develope incredible torque and quite a lot of horse power, if you add semi-automatih electro-hydraulic sequential gearboxes they are almost as fast in straight line and go much faster out of corners.