i'm thinking about building up my diamondback outlook for use as an urban assault toy, putting a sherman flick fork on it and some disc brakes, and upgrading the rear deraileur. my question is, what is the biggest fork that i can put on the frame? i already know the headset is a 1 1/8. its a 2003 model btw. let me know what you guys think. its not gonna be a huge downhill toy as i live in houston, texas. no mountains. haha.