which oil pump/mod?, elusive Options

[r3dplanet]

I have my 1911cc engine rebuild coming along well. Everything is disassembled and off to various machinists and rebuilders. I have the replacement parts sorted out for the most part, but the thing that is giving me the most trouble is the oil pump.

I've read many, many forum posts here and elsewhere but clarity is elusive. It all boils down to the following:

* Melling and other new replacement Type-1 pumps are generally disliked.

* Aluminum bodies are better than steel to maintain an even expansion rate.

* Schadek Type-1 pumps are of decent quality, but the OD size is slightly too small for the engine case. They can have a groove milled into them so an o-ring can be inserted, but I don't own a lathe. Nor do I have the skills to do it much in the same way my do-it-yourself surgeries have failed. When I approached a local hot rod machinist about the modification, he said he wouldn't touch it and gave me a disapproving grunt.

* Original Type-4 pumps can be rebuilt, but I fear for wear and I have repeatedly read about oil leaks and Jake Raby swears against them. One of my design goals in the rebuild is to not have leaks or engine failures.

Nearly every post I've read here and elsewhere refers to an article explaining how to modify Type-1 pumps (http://home.att.net/~airdoc/T1oilpumpmod.html) but that page has been down for years. Archive.org has a copy, but not with pictures, so it's useless.

So here, in the year 2015, can someone explain to my handsome self what I'm to do?

Thank you, space jockeys.

-m.