I am building an Advanced E.T. dragster that I plan to run at my local NHRA Member Track.  This new car will have a screw-type supercharge on it.  The supercharger is certified to SFI Spec 34.1.  Do I need any other type of restraint system?

Answer:

Yes you do.  For Advanced E.T., all screw-type superchargers must have a restraint system meeting SFI Spec 14.21.