What's it worth? 3 speed from a 318

[Purple73Cuda]

I am planning on selling some parts that have been laying around for years. I have being trying to do a mental inventory of the stuff I can sell. It occurs to me that I have a 3 speed transmission with the factory shifter. It came out of a '71 Duster with a 318. What is it worth?
I also have a bellhousing for the same car. Are 4 speed and 3 speed bellhousings the same? What is the bellhousing worth?

[BIGSHCLUNK]

I'd say $100-$150 on the trans. Not really a big demand item...   I think the bells the same on the 4sp, but I'd have to check when I get to the shop.

[Moparal]

I seem to remember the hole in the bell housing being a different size then the 4 spd. I think    but they can be bored out