Your on the right track as a lot of guys swap blowers and drive around on the crappy stock tires and spin through the first 3 gears. Those tires your running are great for the street, not the strip. I also have the 555r on back and get slight wheel spin through 1st gear but the car stays pointed straight, stock suspension as well. I've been to the drag and if your serious about it you need a 15" drag tire to be successful unless your in the top 10% of drivers. Van would be a good guy to call and figure things out, I've spent hours on the phone with him it seems like and he always has good advice.