Originally Posted by
thumpism
I disagree, at least in the case of one Chiorda bike I worked on. [...] The BB shell was threaded Italian--with new looking white paint that had never had cups screwed in--so I only needed Italian cups to be able to install this Stronglight 99 crankset.
Cool! Sorry for the misinformation. It's been 40 years since I worked on a Thun, I thought they had larger BB shell than Italian. Good to know.
SL 99 is a great choice, period-correct and just an excellent crankset.