Driveline

CLUTCH: SFI 1-1 minimum required.

DRIVESHAFT LOOP: Required, must be within 6” of front universal joint, and must circle entire driveshaft. See General Regulations.

FLEXPLATE: SFI 29.1 Mandatory.

FLYWHEEL/FLEXPLATE SHIELD: SFI 30.1 mandatory if OEM floor or firewall has been removed. All entries with manual transmissions must use a bellhousing meeting SFI 6.1 minimum.

REAR AXLE: Any rear axle or factory third-member permitted. No locked rear ends allowed. Narrowed rears must leave tire within 3” of wheel well outer lip. Spools permitted. Aftermarket axles required.

TRANSMISSION SHIELD: Automatic transmissions meeting SFI spec 4.1 required. Positive reverse lockout required. All automatics must be equipped with a neutral safety switch.