So I got carried away and had an '81/'82 Voyageur SP painted and now before I put her back together, I'm contemplating my next move. My rear derailleur says Suntour XC Sport and the front derailleur says it's a Shimano Deore (with a small "SP" sticker on that). Can anyone tell about the quality of these? There's some minor pitting on the derailleurs and I'm wondering if I should install upgraded parts considering this has potential to be a work of art and a joy to ride. Is a front derailleur is different for a triple crank vs a double crank ? What would be the way to go...shimano 600, dura ace, other, or just clean these originals up and use em? Appreciate any input.