Well then at least drop the oil pan to see if it has the 4 bolt mains. That's one thing I'm very curious about, but haven't been able to find any answers on.
Kevin I just looked at the service manual, it looks like the Theta engine only has 2 bolt mains. I'm not sure what kind of difference 2bolt vs 4 bolt makes. Perhaps one of the experts can elaborate.
edit: a snippet from the service manual
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