to upgrade my old Dawes SST and i cant find the exact frame online of the one the bike shop said,its a frame set for 195.95 incl. fork and what not,Are these frames lighter than the dawes? and if its the one i found,it says it has a back brake thing drilled in,is there anyway i can just saw this off the bike or will it compromise the intregrity of the frame? any info on these will be appreciated.