I've ran my yellow top dead tons of time, my Alt died and for a week i'd just charge my battery at night and it would get me around for the day.
The Odyssey 1200LMJT is the one I am looking at for my Stang.If anyone is interested in taking some weight out of their car (instead of just shifting it around,) look into the Hawker Odssey line of batteries. I run a PC680 in my race car. It is TINY and weighs only a few pounds, yet it has no problems cranking my race motor. (The 680 was originally designed for Honda Goldwings and other large-displacement motorcycles and has plect of cold-cranking amps, but the reserve is a bit small -- keep it on a battery tender and you'll have no problems.)