I guess there is one for a Bobcat that is 160 Amps. I may end up running 2 we will see. Possibly 1 off the engine and 1 powered off the Driveshaft somehow or another!
It is tight in my engine bay no doubt and the bigger amp units usually get bigger.
Although this one here looks the same size and puts out 160 AMPS it says.
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=320025350752&viewitem=#ht_500wt_956
or here for up to 200AMPS
http://www.qualitypowerauto.com/catalog.php?item=23