Bought Tats another bike today after I sold his first two haha..
It's a 1989 Cannondale ST400 (upgrade from his 1987 ST400)

Frame: Aluminum Size small
Color: Mystic Blue
Fork: Tange mangaloy
Wheels: Mistral M13 27"
Fr Der: Suntour XCM
Rr Der. Suntour blaze 6 spd

Pictures up after I clean it up.