All your questions are good. For more answers try,
http://drr.infopop.cc/eve/forums/a/frm/f/80760912 & try
www.killerrons.com , Killer Rons is run by James Monroe. He will be able to answer many of your question in one shot. He sells a primer plus system that allows you to race on alky & drive on race gas. Drag Race Results has a wealth of knowledge to tap into. Try a searching in the link above. I guarantee you'll have enough reading for the rest of the night.