Help me get the right fan shroud please

We need more information and pics of what you have.

Sorry...sometimes I take for granted. ...my setup is in my signature. ..
318, 727....originally a slant -6 but converted to a small block by God knows who...

The engine is out right now, but here are some older pictures. ....
I can easily measure whatever need be.....
I'm just not sure what measurements are needed.....and the fact that I don't really know what radiator I have. ....







Jeff