330 is a small block Olds, just like the 350 and 307 after it. Fits any standard BOP tranny. $75 is plenty cheap enough if you've got something to use it in.
If it's complete and still turns freely, it's worth that much. Don't fret if it's a 2bbl. Any intake intended for 350s and 403s will fit.
The 330 is a good solid runner,and can be up to 300 horsepower if it is from a Vista Cruiser Wagon...... Actually a better deal than a 350 Chevy.