Howlin' Wolf Challenge

ok, I know it's probly covering old ground.....

But when reading throught the AWDC2009 Challenge Technical Reg's, It says that 4 point harneses are not mandatory. and the min requirement is that the seat belt has to have 3 anchor points. So can i use 3 point harneses?

Thank you Dan

If using harnesses then minimum is four point and 3" i believe or you can use the existing seat belts