I got mine at a custom shop near here. Not sure where else they are sold, I know you can get the typical "normal" sized Optima at Autozone of Pep Boys usually. Also they don't make a Red Top for the Honda/Acura, just the Yellow Top. I know there are lighter batteries on the market but my Optima was actually a few pounds lighter than the battery that was in there when I bought it, Exide I believe??