I'm restoring a 1968 CL350 and also have a 1965 Dream CA77.
The CL is a new project and I've recently ordered parts from:
Common Motor Collective - They have an easy to navigate site that provides reasons for why you might want to upgrade a part - great for someone like me who doesn't know much (but I'm trying to learn).
Charlie's Place- The Dyna coil kit was a bit expensive, but the brackets are nicely machined and it was a really easy plug and play replacement.
Power Barn - Although quite a few places sell the Mikuni VM30 carb kit, Power Barn also has an option to upgrade to a Motion Pro throttle cable (with gray cable housing). Still don't have the bike running, so we'll see how much we need to tinker with the jetting.
Honda Keys.com - The CL was missing a key, but had the original ignition, so I was able to use the code to get new keys made.
For the Dream, I've ordered parts from
Ohio Cycle.. They don't have online ordering, you have to print a form and actually mail it with a check or money order, but he's got a lot of parts for vintage Hondas.