I got my roadie the year before road STI came out and have coveted integrated levers ever since. I have a triple crank Shimano 3X7spd gruppo (500EX? long cage rear der, pretty much a soft MTB drivetrain). The problem is, no STI lever/shifters were made advertised for 7sd.

Is the cog pitch the same between 7 and 8spd, so I could use an 8 spd shifter? Or did the spacing change like it did from 8 to 9 spd?

If it's compatible, does anybody a set of 3x8 shifter/levers for sale? 105 or Ultegra preferred.

If I wanted to upgrade the cogset to 8spd, would it fit on my 7sp freehub?

Thanks.