Hi, My husband and I got a good deal on a whirlpool tub. We would like to install it in our bathroom. What I would like to know is if we need to buy an oversized tub surround. The tub is 42 inches deep and 60 inches long. Can we modify a standard tub surround, if so how? If we need to buy an oversized one where can we get one? Thanks for your help.