More Magnum Block Oiling Questions

I think I'm gonna go to the pick n pull yard today and check out a 1990 ram van and pull the manifold. Maybe a head. See what I can find. I would think the late LA blocks with the roller cam and through the head rocker oiling would be a good block to build for a solid roller motor. But I don't know. Correct me if I'm wrong
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A 90 is a LA roller motor. It should be perfect for you.