Identifying a 360 flywheel!

How do you tell if a flywheel is from a certain engine size? Lostdawg has a 360 that he's dropping in, and I found a freshly surfaced flywheel for $100.
We just want to make sure its the right thing before we buy it!
Anyone happen to know the part #'s?

 

I did a search for 401 flywheels and found several places that listed the AMC PNs. Should be 322xxxx IIRC - do you have the flywheel? I'd expect the PN to be cast in (since that's how they are made). I think that Omix-Ada also makes these, and if it's one of those, it'll have their PN.

<edit> $100 isn't a very good deal. The new Omix lists for $120. http://www.4wheelerssupply.com/catalog/index.php/cPath/56_293_299

3196929 http://www.xtremeterrain.com/p84.htm