....don't have a pic either but depending on the model year some did bolt to the bottom of the pan of which I'm fairly sure.
If you do not want to use a draft tube Deve has a nice article on his site how to use a PVC vale made from freeze plug/grommet and PVC valve. I did it on my 261 engine. Just an idea.....


1937 Chevy Pickup
In the Gallery
1952 Chevy Panel
In the Gallery
More photos
1950 Chevy Coupe
Pictures!

I'd rather walk and carry a Chevy hub cap than ride in a Ferd.
I can explain it to you, but I can't understand it for you smile