Bret
Keith and others know a he!! of alot more about prepping the Shelby block than I, if that's what you're using.
I know one critical area is the drain at the back of the crank. My engine builder opened up those two little holes into a good sized channel so the
oil doesn't just sit there wanting to blow out the rear main (mine has remained completely dry back there the whole time). Also, the crank needs to have some scribing (or whatever you call it) to pull
oil away from the same area. I know there's a great deal of more prep work that goes into having the block ready, but this was one critical thing Boghosian (my builder) and Jorge Anderson were picky about, and I'm sure Keith pays attention to it as well.