The regulator is only about $40-60 plus installation, I can get them. My Dad owns a shop that does this kind of work, not sure whta they actually charge, my car was the "test dummy" and it worked really well. The amperage may not be there but the extra voltage is. That may help your amps run cooler as well as keep the lights from dimming. Personaly I would stay clear of caps, MHO they suck. What happens if your charging system can't recharge the cap?. With a battery you have some reserve and is a better "buffer" than a cap after the initial "burp". The SVR 33-12 wont add much weight (30 pounds or so) and since you already have a ton of weight the extra 30 is not going to make or break you
BTW I sell the 33-12's at my work, I'll be giving my two week notice there shortly, If you are interested I can get you a decent price (around $85 delivered) on the 33-12
