I am planning to remodel the bathroom and want to replace the vanity and top. The vanity is between two walls, but cabinet and space is the standard 36". The problem is that all the pre-made vanity tops are 37". Without building a custom top, is there a way to get the vanity installed or would I need to cut 1/2" on both sides? Can the vanity top be left as is but extend into the drywall 1/2" on each side?