GMAC-Residential Funding Corp. has revolutionized its way of handling property valuation. As a result, the company has netted huge savings and speedy valuations, not to mention the savings to borrowers. One of the largest non-agency issuers of mortgage backed securities and home equity loan asset-backed securities and the No. 1 warehouse lender, GMAC-RFC in October 2001 implemented Basis100’s Solimar automated valuation technology to enhance its automated underwriting programs,