Questions about Castle repair kits

[suicideneil]

Here's a good question- I heard the traxxas 1515 motors have a rear endbell with a hole in it so you can see the shaft and bearing, is it possible to use the same design on the regular motors so that the rear bearing can be poked out if it needs to be replaced?
I havent had any issues myself ( touch wood ), but by all accounts if the rear bearing fails then its more or less impossible to remove- a sticker over the hole wouldnt be such a bad thing in my eyes if it makes maintenance easier. ABEC 3 bearings would be cool too vs the standard ABEC 1 affairs that are currently used still unless they've been changed recently..

Long live my/the MMM V1