Hiya, I just came across this thread when I googled "Cannondale Omega" and I am really excited to find an image of exactly the frame that I own myself. So please forgive myself for digging this old thread up again
I bought my Omega in 1991 and it's the 91 (grey) hard tail model. It had all the finest stuff on it although it seems that the components slightly varied. I had the Cook Bros cranks, Suntour derailleurs and brakes, Ritchey brake levers, stem and Seatpost, a selle Italia Turbo Saddle, Campagnolo rims and Mavic road headset and hubs. It was my CC bike for many years but I sort of retired it when I concentrated more and more on my road racing. I still own it and now use it as a commuting bike in London where I now live. The only original parts left on the frame are the seatpost and headset, everything else has been replaced and I also put a suspension fork in there...I just recently thought about getting a new 'Urban' bike but then just could not face getting rid of the Omega, so it is still with me after 18 years!