Personally I've never AX'd but I have had the joy of running on a road course (VIR) and I saw guys in Focus's with pretty much STOCK suspension setups that would just amaze you... even with 300whp (at the time) my POWER wasn't enough to keep up with their skill.... it was a learning experience for me.
Experience is the greatest thing that will help you, even though you have gotten some really good advice from the other guys on here.
[B]1951 McCormick FARMALL M
2007 MINI Cooper S Turbo... new project car
1998 Chevy 3500 Ext cab, long bed, 4x4, duelly, turbo diesel
2004 Harley V-Rod.... sex on wheels
2011 Harley Electra Glide Ultra Limited