Dwight, if you do go with R's, run a few more events on your street tires first. Kind of gets the kinks worked out. Besides you don't want to hurt R compounds while you're learning. If you have a set of alloy wheels, run them. Through the years, I cracked the centers on 5 GT wheels on R compounds. No problems once I went to Cosworth wheels. To camo that 215, try a mirror in the center of the engine so it looks like a 4 banger.