Ej22 na bearing size HELP!!

[jdmleggy97]

I'm doing a mild turbo build using a na 2.2 block. And I'm trying to order acl race rod and main bearings. The motor is from a 91 legacy wagon non turbo open deck. The motor did not knock so I would belive everything is in spec and I was just going to split the block clean it up and put new bearings. But the bearing sellers says there's 2 diffrent rod bearing sizes 48mm or 52mm. And this is not oversized and not it's just 2 diffent sizes. I have no clue on how to measure them(idiot&first timer) does the diffrences have to do with turbo and non or years??I thought all ej phase 1 cranks were the same??