I'm upgrading my alternator from the stock 80 amp to a DC power 180 amp, do you think the stock wiring on the 1991 HDJ81 is adequate (to alternator, starter, etc.)? I've read upgrading to 2/0 or 4/0 is recommend.Agree. I was told that they make alternators for DC Power as well. I have a DC Power alternator on my Tacoma that is on its 13th or 14th year of use.