thanks for clearing that up, its somthing ive always wondered about,its somwhat embarassing when your at the track surounded by all your chevy buddies and a cherry looking roadrunner pulls up and runs a 16, OH and by the way ,i havnt been able to get to the tack in quite awhile but last time out at 1/8 mile track the car ran a 6.008 with a miss,theres a 5 in it for sure, you got the combo right on the spot.