Since you seem to insist on thread jacking the OPs post, and it looks like it's not going to get back on topic, I guess I can address your question. I've been in contact with the company (in the US) that made these covers for GM way back then. The still have the original print that was used when they were manufacturing these covers for GM. I have a friend that owns a foundry, CNC machines and fab shop. For the last year or so I've been thinking about marrying the two. With the GM print I can address a couple of issues I don't like about the OEM casting, do some flow mods, and add metal for stuff like oil pressure gauge pickups and other custom mods.
By pure happenstance I met the importer that supplys TA with their Chinese castings. He's interested in what I'm working on, so there's a chance I might end up "in business" as a OEM supplier for catalogs and large parts houses.
While I'm there, I've been thinking about casting a unit that will bolt to our engines but accept the newer gear-rotor style pump. That one will probably get shelved as the catalog people aren't that interested in that unit. Believe it or not, I know a lot more about these things that most people realize.
I will never put my name on an offshore casting. There's too many things about then that just flat out suck. If I can't start with good base stock, I won't bother. That being said, if you look at my first on topic reply to the OP, I mentioned that I'd run a GM cover I found at the bottom of the lake before using a brand new chinese unit. I stand by that statement.
You'll also notice that not once have I mentioned I sell these things. I gave out tech advice based on experience and feedback. The OP (remember him?) can decided whether or not to take it. That's up to him. He's new here and has a serious issue(s) to overcome with his car plus Winter is coming up. How about helping him instead of following me around? I guess I'll see you on the next posting of mine you decide to threadjack.
