The nice thing about Tricolor-all Shimano of that era, actually- is that with the exception of DA 740X it is all pretty much interchangable. For example, my Merckx Century is set up with mostly Tricolor but a compact crank made from a 6206 triple with 50/34 rings, an 80's Deore RD and an 11-34 cassette. Pretty sure I played with the middle section of the cassette to optimize cruising in the 16-17-18 cogs.