Looks like a 270 Cubic inch if that's the number in front of Distributor. Pros of 12 volt. Easier to find the parts.. Alternator, bulbs,..., brighter lights, faster starts, can support modern conveniences such as power windows, locks, AC, Heater blowers, stereo's.., Cons, you have to buy all the 12 volt stuff, put up with all the people that don't want you to convert it to 12 volts,:) . That's about it. Good luck with the COE. I just saw one today that I'm going to go make an offer on next time i'm in Ft. Smith. Nice looking patina'd shorter wheelbase with cab lights, a fifth wheel on the frame. I'd guess that would be a semi hitch.