I am quite new to trials ( the teechniqile side to it any way) because iv had a onza T-comp before and i was quite good but now iv sold it and now i'm interested in making my own bike! iv thought about buying a Gu Typhoon frame and getting parts for it ! i will definitely get a front disc but i'm unsure about the back! on the Gu Tyhoon frame from tarty bikes is it possible to put on a rear disc or do i have to buy any thing extra to fit it and make it work good? and does any 1 have any hints and tips on making your own bike? all help is appreciated Cheers joe !