15 AMP GFI for electrical needs will be provided from the company depending on the type of bath you would like to go with Drain kits are normally provided by the manufacturer. Wood or Concrete floor must be known before purchase. The type of floor determines the draining pipes. Normally all walkin bathtubs can be placed where the original bath tub was. Any other question please give us a call at 800-308-2503 and ask for our tub expert.