Locally you could do very well with a properly outfitted RL, though without LSD it would be much harder. Still, Ionick05 has an open diff car with Progress springs and bar, CSS/T shocks all around, smaller pulley with a questionable tune, intake, and 225/45 R1's on stock rims and holds his own very well. A better modded car could do quite well.
Nationally - The EF, EG, and EF Civic's and old 'teggy's will always reign supreme. At those levels everyone is making sick power and can get their weight into a reasonable place, but all else being equal, they have double wishbone suspension and everyone else doesn't. That's a helluva tiebreaker right there, lol.