[Kracka]

Sidewalls will effect the handling greatly. Some tires have stiffer sidewalls than others. To offset a softer sidewall you can just up your tire preasure. If your main purpose is to build a 1G than can handle get some nice lightweight 17's. I had the Baer 13" track-kit and highly recomend them, great setup with some Porterfield R4-S pads. Have you removed your front bumper support yet? That saves a lot of weight over the front wheels and can improve turn-in greatly.