Battery advice

Does an Optima Yellow top need a battery box around it if its in the trunk or passenger compartment? Its a sealed battery...

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Welcome to the cult of JVL drink the koolaid or be banned.

I have not checked the R-A rules but here in NASA Rallysports rules on the matter.

3.6.7 Batteries
3.6.7.1 Mounting
Batteries must be securely mounted with metal-to-metal mounts.
3.6.7.2 Housing
If removed from the original location, all batteries shall be
mounted inside covered, non-conductive boxes.
3.6.7.3 Mounting within Passenger Compartment
If mounted inside the passenger compartment, batteries shall be
those that are completely sealed or so designed or modified to
prevent acid spillage.

So you need to have an optima battery if you want it in the passenger compartment and it will need to be in a box if it is mounted anywhere other than the stock location.

R-A Rules:

6.4.A.11: If a lead-acid (wet cell) type battery is located in the drivers/co-driver
compartment it must be equipped with leak proof caps and enclosed
in a non-conductive “marine type” box. Dry Cell batteries commonly
known as Recombinant Gas (RG) or Glass Mat Technology (GMT)
batteries are not required to be in a “marine type” box. The hot
terminal shall be insulated on all vehicles. All batteries shall be
securely attached to the primary structure of the vehicle.

10.2.C.14: The original battery and alternator may be replaced by another
commercial automobile unit of equal or larger capacity provided the
location remains unchanged. The make is unrestricted.

Section 10.2.C is specific to Production and Production GT cars, so if your car is in another class then you do not need a battery box in the passenger compartment for a dry cell battery.