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A Midget/Micro/Sprint tank must have a bladder. No metal tanks without a bladder or fuel cell inside. A drag race type fuel cell will be allowed without a bladder. Rollover valves or a fitting with a hose used as a safe guard for rollover fuel spill and proper bulk head fittings used for fuel or electrical fuel pump in the tanks will be mandatory. An SFI rated fuel cell is highly recommended. All tanks/fuel cells must be securely mounted between and/or behind the chassis frame Driver/Owners in a safe place.