altenator

GQ RB30 melt down... Need help!! G'day fellas, I've since bought A rb30 troll, has little rust in the gutters, but overall in great nick.. I did a full service on Sunday 24th of feb and after driving for an hour my cigarette lighter blew up and a **** load of smoke came out from behind my...

As the title suggests, I'm looking to upgrade the alternator on my RB30 GQ. I'd like to get up somewhere around the 100-120 amp range. Hopefully without costing an arm and a leg! Any help will be greatly appreciated.