3 inch Side to side offset allowed. No dry sump systems, super chargers, nitrous or other injection system. Cast iron exhaust manifolds or headers. Exhaust must exit rearward of driver. Exhaust noise levels may not exceed 100 decibels.
Mufflers are optional.
Securely mounted, fully charged required. No gravity flow cells, outlets must be on top. Fuel cell complete with 18 gauge container, interior bladder, foam baffle, and a roll over valve required. Steel fuel lines to fuel pump. No fuel lines inside of drivers compartment.