All explanations must include the legal theory!

Jack contracted Jill to build him a house. He specifically requested that the pipes used are "Bail of Water" brand.Jill constructed the house and installed pipes that were substantially similar to the "Bail of Water" brand but they were a different manufacture.Jack told Jill she needed to remove the pipes and replace them with "Bail of Water" pipes.To do so, Jill would have had to rip out the flooring and replace it, which would have been extremely expensive.Jack refused to pay Jill for the remaining work she did on the house and Jill filed suit to demand payment.Who will prevail in a lawsuit and why? Please include the case name of a similar case to support your argument.