I am a fan myself but I thought it won't work on that frame, especially with a fancy paintjob like that... and if he will choose to stick to the 600 tricolor.
It's all about trying out, I just hope he won't choose to get an ahead adaptor and put a ahead stem as somebody understood :)
You're not a fan? It's looked great on Colnagos in the 70s through to Gios in the 90s.