1928 Intake Manifold

As far as I can tell there were five basic versions of the intake manifold in 1928. It's important to note that an important distinction of 1928 intake manifolds is they had 1-1/2" counterbores for gland rings at the ports just like the exhaust manifolds. Using the notations on the pic above I believe the variations are as follows:

1. Intake type #1 with mounting ears style #1 (shown)
2. Intake type #1 with mounting ears style #2
3. Intake type #2 with mounting ears style #1
4. Intake type #2 with mounting ears style #2 (shown)
5. Intake type #1 with mounting ears style #1 with the addition of an embossed vacuum hole similar to later manifolds.


Please note the first four types have no provision for a vacuum line. Intakes 1, 3, and 5 have mounting ears style #1 which WILL make them '28 manifolds with counterbores and can be identified with certainty while on an engine.

Ok, here is the help I'm hoping for. I'm looking for actual examples (pics) of intake manifolds 3 and 5. Additionally if anyone has any of these types AND feels the manifold is original to their engine, please let me know the manifold type (1-5) and the engine number to help determine the time lines.

Source:  http://www.fordbarn.com/forum/showthread.php?t=2558