Swing arm cars HAVE been known to have more racing-oriented gearbox choices, though. Not to muddy the waters for our poor newbie, but welded spider gears and pseudo-LSD potential exists, as does the removal of cv joints from the drivetrain.
The handling thing is the trade-off. In order to take advantage of wider tires and wheels, you need to narrow the swing axle setup and torsion to fit a seven-inch tire under the back of a slab-sided Speedster.
It's a matter of what you want to do with your car, I suppose. If, say, you like seeing 250-hp 911s getting smaller in your rear-view ... four consecutive times ... a swing setup and a two-plus-liter engine are a great combo.
There had not be any curves in the road, or you'll kill yourself.