The Kaplan on a real estate law and they contracted with faithful construction to build a house on it for $360,000 the specification list, all plumbing bows and fixtures to be crane brand the Kaplan's left for vacation and during their absence, faithful was unable to buy and install crane plumbing fixtures instead, faithful, installed color, brand fixtures, and recognized equivalent in the industry on completion of the building contract the cabins inspected the work, discovered the substitution and refused to accept the house claiming faithful breach the contract Are they excused from performing their part of the contract faithful committed a breach faithful substantially performed, but they may sue for specific performance no faithful substantially performed, but they may sue for compensatory damages no faithful substantially performed so they have no remedy