Thumper
Autocross Champion
I think the firewall only applies to gas tanks mounted inside, since water/meth once mixed is not combustible (I've tried) it doesn't apply. I could definitely be wrong on that though
Nope, I wish.
HIGH PERFORMANCE DRIVING AND TIME TRIALS 3211.4.21
Alcohol Injection Tanks containing alcohol (e.g. methanol) that exceed 50% alcohol by volume should carry an FIA FT3 (or higher) rating and be installed per fuel cell regulations found in CCR Section [Ref: 15.4]. Tanks containing 50% or less alcohol by volume may use any container per the manufacturer’s instructions or recommendations. Under all circumstances tanks or containers must be mounted in an area that is completely separated from the driver by a bulkhead or firewall.
I added emphasis but there it is. It's hatchback discrimination is what it is, damn sedan's don't have to worry. lol