Only truly bad bearings I have come across are Romania rollaway.
Avoid like the plague.
Had two sets of brass cage roller bearings fail in less than ten minutes.
On an electric motor on light run test.
Rs bearings have extra clearance as std than non sealed bearings.
If you take the rubber seals out you end up with a bearing with equivalent to a c3 spec bearing.
Always used the best quality RS c3 bearings I could libarate from work on wheels
A cheap way to fit the bearings.
A length of screwed rod and a couple of plates with clearance holes couple of nuts and slowly wind them in.
Keep checking your pulling them in square.
Hi bud.
I don't think the bandit will be a straight swap for a water cooled motor.
Almost straight swap for slabbie and slingshot.
I think it will need a bit of surgery to get it in.
Expert will be along shortly to confirm.