ok so i am ordering my extensions, sprocket, chain, and strap this week and wondering what rear sprocket to get. i am going with a 16 front, but cant decide the rear. what sprocket will help my times the best. right now with just -1 up front i am finishing the 1/4 at the top of 4th. the sprocket will be for the track only, then gonna run either a stock or lower than stock for my street/everyday riding. i was planning on going up 2, but now i am thinking to do more since i will have a 2nd rear one for the street. what would get me to the top of 5th? i will be running about 6 inches of stretch, and a shinko drag radial for traction.