Anyone here familiar with Trek bikes? What size stem does the Trek 7300 have?

I am asking because a friend of ours wants to change the suspension fork for a rigid fork and has been told by his LBS that it can't be done because of the combination of V-brakes, 700C wheels and stem size.

Asked the question at our LBS and he said that stems commonly come in 1" or 1 1/8" - he was pretty sure Treks had 1 1/8" stems.

Which would mean it is entirely possible to replace the Trek suspension fork with a rigid one because other bikes use the V-brake/700C wheel/1 1/8" stem combo. Unless Treks have some bizarre proprietary setup which means you can't use aftermarket forks.