Good call. Tait's 6'3" & Fabreau is 6'1"
Maybe they could work that out with platform boots for Fabreau... or even just camera angles so as not to give away the height difference... but again we're looking at a lot of trouble to go through for a masked character who the stunt man can obviously just play all the time unless Fabreau just wants to do it just to say he did it or something.
Fun Fact: I just now realized
Tait Fletcher used to be an MMA fighter with a short run, but was on the 3rd season of TUF.