The simplest conversion alternator is the internally-regulated "10-SI" which is available in several amperage ratings. Unless you're planning to run a lot of add-on accessories, a 65 amp alternator will have twice the capacity of most of the 12 volt generators that were original equipment on that engine. All that's required to wire the 10 SI is a heavy conductor to carry the charge current (8 or 10 gauge) from the alternator output terminal to the battery, and a short jumper wire to one of the terminals on the perimeter of the housing. It's the one on the right when looking at the rear of the alternator. If you want to run an "idiot light", the left terminal is the ground for the light. There's a 2-wire connector available for that hookup that's available from several vendors or on Ebay.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!