I am getting ready to start on my 600hp engine swap soon. My back tires are 275/40/17 Z rated tires, they are completely bald, and it is time for new tires. With my new motor, I should be making more power than i can handle. I am thinking that some drag radials might help a little harnessing the power, i don't want to be spinning tires at 60mph+. My question is, how bad will my handling be affected by running these drag radials opposed to Z rated tires(if i run them on the street with full psi) and how much traction will these drag radials give me compared to the other tires, if any at all?? thanks!