We have an approx 30x60" tile shower with the pan recessed into the slab foundation a couple of inches and no liner. I have learned this is a pretty common installation here in Florida. Anyway, would it be possible to demolish the shower curb, move the drain from center to right or left, fill the recess in the slab, then install a regular bathtub in the space? If it is possible, what would something like this cost? I mean not exact, but $500?, $5000?, I have no idea! Thanks.