Thank you for the very helpfull answer. Kinnesis 6061 aluminum is same as my cannondale R300?. I see that aluminum frames type in bikes direct. My bike is 1998 you think is worth i upgrade that bike and i not look to buy newer bike? My bike have 126 mm dropouts. When i buy the bike used is had wheels with 7 speeds cassete. But i put wheels 130mm. Is fit but i have to pull the dropouts for make the wheel seat correct in the dropouts. that is go give problem in long run? I have stop ride the bike for now because need new bottom bracket. And now have downtube shifters but i want put brifters on this bike. Is worth i do that in old bike or is better i found new bike. I ride 56cm bike buy my cannondale is 58cm. that is sounds much difference ? Now when i ride the bike i feel okay