I'm thinking my best bet it to get some syncro II's and a campy rear deralliur, but atm I can easily get the rear campy derailleur but the syncro II's are abit harder to get hold off, so if I run shimano friction shifters that I have now, can I get them to work with the campy rear untill I get the syncros, obviously I'm expecting to to some tweaking to get it to work if its possible. It's just Iv herd that fiction shifters are good for working with different branded components.
Chees for the help guys gona have a look at the link on my lunch brake
Friction shifters are not brand specific and as we're talking 6 speed the amount of cable pull required is not an issue. Your Shimano SIS shifters should have a friction setting on them so will work with your campy rear mech, once you get into Syncro shifters (or the later and slightly less innaccurate Syncro II) then you are in a whole new world of ensuring you use top quality cables (inners and outers), compatible freehweels, correct width chains, correct alignment of the freewheel reletive to the frame...when it works you will rejoice, or if it doesn't you'll what I did and sell the shifters on Ebay!