I have a dilemma. I have an opportunity to buy a 1974 Masi Gran Criterium (Italian) for $1500 complete with Super Record gruppo, or $650 for frame and fork only. The wife doesn't want me to spend $1500 on the bike but I could probably get away with buying the frame. I have a Nuovo Record gruppo that I can put on it. In the long term, would the bike be more valuable with the original gruppo intact? Also, is the existing gruppo worth $850? I want to ride the bike but I also look at it as an investment that I hope to be able to make money on down the road.