BTW, good tires and wheels are one of the most important aspects to great handling (which is why I hate the stock V6 stuff so much). If you check the stats on any of the ultra-agile supercars out there (Ferrari Enzo, Porsche GT1, Ford GT, etc) you will notice that they all have super wide tires (like 295 to 315, or larger). Sure, they all have fancy 4-wheel, fully independent, double wishbone, unequal length A-arm, true coilover suspensions. But, stick the crappy 215/65's from the V6 onto any one of these cars and they won't get anywhere near the 1G skidpad/70 mph slalom performance they have stock (regardless of the fancy suspension).
Wide, low-profile tires on lightweight wheels is probably the single best improvement you can make to your car's handling. Your 9" wide rims should accept 275 or 285 series tires, no problem. Check with an expert though, before you buy.