George,
I read the posts in the Cleveland forum and am stoked about the idea. I am by no means a Cleveland oiling expert, but would this scenario work? Assuming the XE tooling still exists, simply (and I use that term loosly) cast the blocks, but rather than use "Old School" cam bearings, block off the cam bearing oiling passages and install the much desired splash oiled roller bearings in their place. I would assume this would enhance the current oiling system enough to end any possible oiling woes.
Other than that, your Dart idea is the most viable option.
Ron
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