Looking for a points distributor

[teamssc]

I know the 1001 reasons to stay with an HEI unit and not go to a points distrib but I'm feeling nostalgic. I used to have a 72 Nova with points. I want to have the experience of swapping a points unit in and our of my 78 sb 350. I can only guess if the engine is a 78 though the carburetor does decode as such. Anyway how do I determine if it's HEI? Its got a coil in the cap so that might be all I need to know, short of taking the cap off.

Anyway if I'm looking for a used distributor what can I buy? Anything with points that is for a Chevy or do I have to determine if it fits a 350 truck? I see a lot on ebay $40 to $70 delivered and I'm wondering how to choose.

Thanks for any direction you can give me.

Don