I'm just wondering if marin did the two-texture thing as protection to the vulnerable spots..?.. who knows?
You'll soon find a stem that'll suit that. It may not have marin logo on it as it was peeled off too easily. plenty of marin stems around with the pulley wheel, although you may have to re-coat it black to match rest of the bike. I believe a new set of decals will contain the stem decal too.
crc have ritchey headsets to suit that. good price...http://www.chainreactioncycles.com/Mode ... elID=39820
68 x 122mm bottom brackets are quite common too. crc had the UN26 in that size for £3.24 for a while, not any
more though. not the greatest bb in the range but at that price you can't complain if the mileage you intend to put on the bike is moderate.
I have it that the '92 bv had 400LX components, plenty of that sort of exage stuff still around in case any of your kit is beyond all help.
Ride yorkshire on an old bike.