[Steve Plucker]

Here is what I have:

Two which are Flat Bottom, 1 Peice Forgings, No Plugs;

One which is Flat Bottom, 1 Peice Forging, Plugs;

One which is Flat Bottom, 2 Peice Forging, No Plugs;

One which is Raised Bottom, 1 Peice Casting, No plugs (Stamped into the mounting base is A9728).

None with the "raised" ribs on the mounting base as seen in #2 of the JS.

Are there any more features worth noteing?

Hope this helps.

Pluck