Go back in this topic and you'll see discussions of the oil squirters under the pistons on a Starion block. They are not there on a Montero block, but they can be installed - if you can find them.

If you choose to go with the "Montero block" option, you'll need to limit your boost pressure. I believe the concensus was about 5-6 lbs.

Obviously, a Starion block is preferable.