I was checking the What are some of the best move combos in Pokemon you have found? and I found an Endure + Reversal strategy. I went to Bulbapedia's Reversal page and with 0%-4% HP the damage will be 200.
200 x 1.5 = 300 Power and that is real power! If the user's holding a Metronome this is going to be a deadly sweeper.
So does Reversal get STAB?
Obviously only if used by a Pokemon that gains STAB by being a fighting type.
Reversal's base power varies, so it still gets STAB.