Height requirements are generally based on ejection seat limitations, which we don't really have in the airline world.

It comes down to can you function in the cockpit you're training on. I think you would have to be way off the chart tall to not be able to fit into an airliner and make it work...like Guinness World Records tall.

I've known one no-kidding midget at the regionals, IIRC he did carry a booster around.

So odds are you can make it work either way.