i dont know i just am searching for a cap and somtimes i come across a capacitor that says it is a super capacitor the one i saw was made by stinger and it was 1 frad http://www.cardomain.com/item/STISHD1M
all caps are pretty much the same and measured by the number of Farads. the "super" cap wsa prob just in the name. the better caps out there are made by allumapro and batcap and are basically like a second battery but with a fast discharge/charge rate.
but remember, caps do not solve electrical problems, but just help with amp responce, only a HO Alternator will solve electrical problems