Pretty straightforward, just be aware you may need to have the rear triangle reset to get 130 over lock nuts to run a modern group. Depending on your frame it could be less, but it's an easy and straight forward job for a frame builder / good bike shop. Plenty of "advice" can be found in the current projects if you decide to do this and start you're own build thread.
The Gazelle was .. Campagnolo Chorus hubs / Sun M1AA Clincher rim, Crankset / Bottom Bracket Campagnolo Record, Shifters / Derailers etc Campagonolo Centaur
Pretty straightforward, just be aware you may need to have the rear triangle reset to get 130 over lock nuts to run a modern group. Depending on your frame it could be less, but it's an easy and straight forward job for a frame builder / good bike shop. Plenty of "advice" can be found in the current projects if you decide to do this and start you're own build thread.
The Gazelle was .. Campagnolo Chorus hubs / Sun M1AA Clincher rim, Crankset / Bottom Bracket Campagnolo Record, Shifters / Derailers etc Campagonolo Centaur