Turbo oil feed and return will need to be blanked off on the turbo block; you’ll probably find the blanking plate and capping screw on your NA block already fitted just swap them over. The turbo block also has oil squirters (jets) fitted under each bore to cool the piston/bore down. Probably an advantage to leave them as they are. Oil dipstick tube and dipstick are different, that’s about it I think.
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