Well I asked the guy that's been doing my machine work for years and he said that out if the 100+ 3800's that he's done, only one required the mains to be align bored.
The old deal with rods needing to be resized on the big end after new bolts was because the old bolts were pressed in.. As far as installing main studs the block captures and centers the mains on dowels... going from bolts to studs does nothing. I'll measure everything but I'm guessing i'll have no troubles..
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