so, im new to all this. i got a trek soho s several weeks ago and now that i am getting more comfortable riding in traffic and such i am interested in changing some things around. i am mainly interested in switching out the factory handlebars for some bullhorns. my question is: do i really have to switch the stem or is the stock one adequate? as far as brakes go, will the stock ones just screw back on to the bars, or do i need to replace the levers? also, is it a matter of aesthetics or function? is this something i can do in the basement with average mechanical knowledge or should i go to a shop to get it done?

thanks for the help