Koga RecordPro - that is a thoroughbred time trial beast. Yummie. You ordered a time trial bar for it I suppose?
Yes, I ordered a Cinelli Tempo bar. Also from Mario from www.defietsenmaker.nl
I found the frame (like the one below), that came with a Dura Ace headset and a nice Wolber front rim with Dura Ace hub, on Marktplaats this week.
Bought it for a very reasonable 125 euro's. The frame is a tiny bit to small for me (59/60cm), but with a slightly longer seatpost and a 130mm stem it will be fine i hope.