I was also thinking of upgrading alt for bigger one.
But after I made electrical upgrades, rewiring alt and bulkead connetor, removed alt meter and rewired lights and new swiches and relays.
After all those and now my idle voltage is 14volts. And I have bigger lamps and speakers.
I would make sure all electrical system are good condition before putting bigger alt, its like putting more pressure to leaking pipe, worst case it will brake your new alt faster
But after I made electrical upgrades, rewiring alt and bulkead connetor, removed alt meter and rewired lights and new swiches and relays.
After all those and now my idle voltage is 14volts. And I have bigger lamps and speakers.
I would make sure all electrical system are good condition before putting bigger alt, its like putting more pressure to leaking pipe, worst case it will brake your new alt faster