don't do it, I did and have gone back, its not all it cracked up to be, certainly not retro.
Buy a quality square taper and a good set of cranks for the same money.
or at a push some RaceFace turbines and ISIS setup and get a decent bottom bracket, you get to keep the mid 90 retro look.
Don't cave and buy into the modern singletrack way, stay retro stay strong!