I have a model 98 9.3x57 that I got from Tradex and want to change the military trigger to either a low rise model 70 type or go to the Timney trigger with side safety (kind of leaning the Timney way).I was wondering if I choose the Timmney what happens with the original safety does it just stay on the bolt or is removed?? and is he Timmney basically a bolt in operation with some stock inletting or is there more modiifications needed to the bolt