i was going to post this in mechanics but since the bike in question if 24 years old and i want to retain its period character, i'm posting this in C&V.
i'm in the process of a complete rebuild of a mid-80s shogun loaded tourer. upon removal of the BB spindle and cups, i'm noticing they are showing some slight pitting, mostly on the drive side. the spindle and cups are tange, and the spindle is 118mm to accomodate a triple chain ring. the cups are the early "sealed" type with the rubber o-ring, not a true sealed cartridge type. standard width bracket and threading. i'd like to upgrade to a comparable quality BB while also preserving the period look since the majority of the original components will remain. should i look for NOS cups and spindle or just upgrade to a sealed cartridge? what were some of the good vintage cups and spindle models? if i go with a new sealed cartridge, what would a comparable quality be? most of the other stock components are shimano XT "deer head" and 600 mix, so i'd like something of a similar caliber. i'm fairly new to bike mechanics and i've never had experience with cartridge BBs... i'm guessing there's a whole range of qualities out there?
what would you do?