well I have, I agree but, when I looked inside my montare frame it looked similar and about 3mm in from the edge there is a groove for the circlip that holds the bearings. the 88 catalogue specs a fisher sealed cartridge bb which translates to a push fit bearing and axle job (a bit like the kleins) and indeed the modern shimano bb30! ha who knew
its hard to get a pic of the 87 procal bottom bracket but there's a hd video of someone riding one and I paused it as the cranks went passed the camera and there is a couple of decent shots of a static 87 hanging up and it looks like a wider bb shell, in any event it had a press fit bb that's for sure.
so if it is tapped its not a pro caliber.
here is a pic of a '87 and a '88 for comparison of paint schemes, it seems the fade points and decal placement were not uniform by any standards
jeez im sad
1998 GT lts.1990 fisher montare/procaliber tribute.
1984 raleigh record sprint and the full set of Pacific Blue on dvd.