You know, my experience today just reconfirmed my belief that ford dealerships suck. During the time I have spent rebuilding a 2.3L Duratec, there have been various maintenance items that I have needed to replace such as oil pump, main bearings, friction washers, main rear oil seal, and the main bolts just to name a few, and every single time I called a ford dealership in my area neither they nor any of the ford dealerships in the city of Charlotte NC would have the parts that I needed and would tell me that they would have to be ordered straight out of Michigan.
Luckily, because of my knowledge that the Mazda MZR engine shares many of the same components, I thought to give the one and only Mazda dealer in Charlotte a call... and wouldn't you know it, they have put Ford to shame every single time. I ended up getting all the parts mentioned above except for the main bolts (since I went with ARP), and the rear oil seal (which I got from Oriely's) from the Mazda dealer. I also believe that Mazda may use an oil pump that is similar to the high volume pump made by Cosworth, since the price was almost the same as the Cosworth offering. As for the main bearings, the MZR has the same clearances as the Duratec for the mains; however I believe the rod bearings are different.
Lastly to answer Felix's question, yes this is a Duratec 23 that I'm rebuilding with supertech 9:1 pistons, eagle rods, and crower valve springs. I intend to go turbo and figured it was smarter to build up the 2.0L's bigger brother rather than take out the 2.0L I already have in addition to having no car to drive until all was done.
BTW - if anyone needs the part numbers for the aforementioned washers they are mazda/ford L3K911407/710600