Hey, so last summer I got into biking my dad gave me what believes to be a 1989 rocky mountain. He thinks it's called a 'Giro'. This is the picture http://puu.sh/o4Mdk/16095743af.jpg It has shimano 600 series group set gear on it. Wolber Tx profil 700c rims. i've been looking around the internet and can't find a catalog it was in or anything. I was hoping some one here might be able to help! thanks a lot.