FYI, the Red Top is classified as a "Starting Battery", which means it has more Cold Cranking Amps, and it is not designed to be constantly drained and recharged like a deep cycle.
The Yellow Top is a "Deep Cycle", with less CCA's, but can discharge and recharge with little to no ill affects.
The Blue Top is a hybrid of sorts, more CCA's than the Yellow, less than the Red, but is also a Deep Cycle battery like the Yellow. Kind of the best of both worlds. They are also the most expensive if I remember correctly.
I was able to fit the Red Top in my 2000 CSVT, but I had to get creative with the battery box and battery cables (I had to remove everything, trim some of the battery box, then re-route the cables to make it work. One other thing to watch out for regarding the Optima, it is taller than the stocker, so you "may" have contact of the negative pole of the battery with the hood. You can grind down the pole a bit, or leave out the foam at the bottom of the battery tray. Don't ask me how I know.
Tony
