thanks guys, I gues those "upgraded" belts are for the more poorly engineered domestics? I'll be staying less than 300hp, and I am going to set my rev limiter to 8k. I just wanted to make sure so that my timing would be as exact as possible. I will be running hondata, and yes I intend on arp studs in the head and I will probably use then for the connecting rods and bearing caps as well.