Can the mats be cut in half without difficulty or without compromising the sound reduction qualities? I need 2 pieces of 2x6.

You can cut our 3/4" Shock Mats in half with a sharp utility knife and a straight edge. This is a vulcanized mat, so it will take a few cuts to get through the mat. When you do cut these mats, there is potential for there to be some reduction in the sound reduction, but not enough to prohibit cutting the mat.