The sohc is considered to have the "old school" look. It is virtually bulletproof and has a wide range of parts available for engine repairs or hop ups.
I the dohc is more modern though. The dohc supposedly has more power but once you get to the back wheel, I am not sure how much there is.
The ride IS the adventure. The destination is just to get gas!
Thanks Re-Run! I found a whole 79 CB750 with a running engine and all the goodies I need to finish my build. Hopefully have it mocked up Sunday. I just hope the 79 will fit in a 72 frame. If not, I found a 73 with a non running engine. Guy said it's a spark issue. We'll see. Going to take my frame with me to make sure.