If your going to rebuild it anyway, I don't think you will hurt it to try and start it since it turns over freely. Maybe it won't even need to be rebuild!
There are a few things you should do if you decide to run it:
Change oil and filter.
Fill with fresh oil/filter, then remove distributor and prime the oil pump with a priming tool which will distribute oil through out the engine. (preferably one with a housing so oil gets pumped up to top of engine too) You can buy or borrow this tool. Reinstall distributor. (mark it before you remove it so you can put back in correctly)
A fresh set of points and a condensor would be a good idea. (if it has points) If it needs a cap, rotor or plugs and wires, you'll need to replace those too.
Fresh gas is a must. Any gas that's been sitting for 10 years is not usable. In a case like this, I like to by pass the tank by attaching a large funnel to the gas line behind the fuel pump and feed the engine fresh gas through that. An I.V. for cars!
Crank the engine over to get gas up to the carbs. Keep the air cleaner on incase of back fire. Keep a wet towel nearby to smother any flames if needed.
There are probably a few things I left out but as long as you use fresh oil and gas, and the ignition system is up to par, you should get it going with no problems. Main things would be that the timing is close enough and it's getting spark and fuel.
If it does start, baby it for a while. Get it up to full operating temp before racing it up. Don't go drag racing out of the driveway.
Lastly and most important, let us know what happens!
, Good luck and enjoy the journey.
I guess I would just like to see if it would run after its been sitting so long. I have only had the car for about a year and I don't know if it will run. I have never had a car with daul fours so I am not sure how hard it is to get them running. I might fill better if it was running before I started. Might give me so incentive to hear it run again 
I know it only took me nine years. It's amazing how time has flown by. I got the car out last week and pressure washed the entire bottom of the car as well as the engine compartment, it needed a good cleaning before I started working on her. I ended up making some new battery cables and fixing some wiring issues that was cause by the PO. Once I finally got power to the starter and the distributor I sprayed some oil in the cylinders and turned the engine over a couple of times and then let it set for a day or so. I changed out the plugs and wires, rebuilt the back carb and supplied some freash gas through my borrowed lawn mowers gas tank, I didn't want to chance the cars gas tank. The engine fired off with now major issues and seemed to run pretty strong
I only ran the engine for a few minutes being it didn't have any water in the radiator, this is when the real test came into play. Not knowing the history of the car I wasn't sure if the block was cracked. When I started adding the water I keep looking on the floor thinking I would see it pouring out of the engine as fast as I was pouring it into the radiator. I guess I got lucky because she never did leak any water.
I talked with a guy the other day that had the same problem that I have so he suggested I sale all my cars and just keep one so that way I may actually finish something.
neat car
