Some german tuner stuffed a V-8 into a 201 at least twenty years back. They probably had the sense to upgrade the brakes and front suspension to go along with it.
But, whatever "handling" the car had would be seriously effected. Or is that affected? It's easy to feel the increased understeer in a 6 cylinder 201 VS a 4 cylinder so just imagine what that V-8 does to weight distribution. RLE