diff. caps what side?

agree about the locating of the race, however it is importantant to have the proper "crush" on the race to elleviate any possible spinning of the race in the bore. Swapping sides does not assure proper tolerance.
As a side note, bearing manufacturers are doing away with the locating tabs on eng bearings.
a bearing, regardless of type, needs a set amount of crush to be correct and the only way to get that is to have everything match as machined.
crossed a few diff caps in my day to know there is a difference in final assembly when things are correct or not.
Not to dis you, just informing him to examine the honing and all machining marks closely and he will be able to tell which cap cam from which side.
No reason to guess.
Just my opinion, as you have yours.