If you are willing to put the battery in the trunk, you could probably use the vortech or canton.
I know that sounds like alot of work and expense but looks like you are 10k in the engine anyway.
Does wonders for traction too having the weight on the pass side rear tire.
you need at least something holding 2gallons or better or its not worth it. The vortech one is good and canton or like in my buddies cobra a 5 gallon fuel cell in the trunk. that will def help keeping ic temps down