High Flange vs Low Flange

i am going to upgrade the wheels from ambrosio
i have miche primato cranks [the old one] but i don't know which BB

unless you use Oldtec for both [wheels]???
didn't get this bit..

from sensible to hipper than hip in one easy step.

my goldtecs lasted a long time, only complaints are they don't like being flipped a lot (the alloy axle ends begin to burr, and it's a pain to get them in quickly) and the chainline meant I couldn't use my new wheelset with the same BB, so a road wheelset and track wheelset should have 42mm chainline hubs ideally, unless you use Oldtec for both. shit when you upgrade.