0.025 to 0.035mm is ideal range . i always like aim for high 0.02? to 0,030 max
I reckon your bearings been swapped at some stage in japan during a bit of a refresh for some reason, I remember machinist I use who does a lot of sr20 builds once said it common see all 0 shells fitted in a jap rebuild as gives larger clearance & lazy way of being sure not going pinch a bearing & possibly track use precaution .
On a high mile motor only way be spot on when using nissan grades is use quality digital mic & bore gauge & do at least 4 measures to each journal & bore. Plastigauge is really not very accurate but a good last safety test before final build.
Out of plastigauge & nissan stamped grades I would trust nissan grades more when parts still super condition
I would deffo look at grade 1 on rods & would be more inclined head towards nissan stamped sizes than go with all 0 grades BUT nissan grades were measured thousands of miles ago so only way know what best for sure is measuring with decent mics & bore gauges.
couple images & the pdf data doc to help ...
What you also can consider is likes of ACL that only done one size which is about same as grade 2-3 works on most builds well but oem nissan way done right is better as can get more even clearance over all bearings without bodging or just living with off clearances, most people including your average back street engine shop just can't or can't be bothered measure accurate enough to be oem precise & part of reason most rebuilds spin bearings in a month or struggle see 10,000miles of life while a oem build can see 10x that .