Campagnolo Athena 11 speed or Centaur 10 speed.

Hardly as classic as it used to be, but better aesthetics than the awful Jetson look of Shimano's modern cranks.

VO (Velo Orange) makes silver stems for threadless. Or stick to threaded. Shouldn't put you at huge disadvantage.

Edit: Wheels have visually the most impact, so maybe try to get the best of the more traditional set-ups, like Campagnolo silver Record hubs in 10-11 speed, laced to silver, non anodized Open Pro, IMO a viable race worthy wheel set. With 32 spokes they look pretty classic, especially if you remove the stickers from the rims.