Stock floor you build a new frame under the cab and dont need to cut the floor.
Traditional you cut the floor along the doors, the back wall and on the firewall, and lower the cab down and then weld in fillers to make up the gap.
well on a stock floor u 99.9 % of the time u still have to cut the floor but not as bad as a traditional, u have to make room for the trani and the drive shaft i dont really now how it is for a mazda but i know pretty much on most of stock floor jobs ive seen u need to do some trimming