Guys with the 60 amp Toyota/Denso run fans and report good results. Charge at idle is much better. It does not drop into the factory brackets with out modification but AR Engineering sells drop in brackets. Its smaller and lighter than stock. Do a search there is a lots of write ups on it. It is internally regulated, defeating the stock external. It uses an excite and sense wires plus the charge wire to the alternator. No matter what alternator you do choose run a charge wire to the alternator to take the load off the bulkhead and ammeter. Doing this will reduce the function of the ammeter.
