July 19, 2003

Santa Monica, CA – Bison Capital Structured Equity Partners, LLC announced their investment in IMPCO Technologies, Inc (Nasdaq: IMCO). IMPCO is a leading designer, manufacturer and supplier of fuel delivery and electronic control systems that allow internal combustion engines to run on alternative clean fuels. The conversion of internal combustion engines to run on propane or natural gas enables Impco’s customers to capitalize on the fuel price differential and to reduce harmful vehicle emissions. Thus, IMPCO addresses its customers’ financial and environmental concerns and provides them with energy independence.

IMPCO generates approximately $70 million in yearly revenues. In 2000, 2001 and 2002, Deloitte & Touche recognized IMPCO as one of the top 50 high growth companies in California. IMPCO will utilize Bison Capital’s $20,000,000 investment for expansion and to acquire 50% of B.R.C. Societa Responsabilia Limitata. Based in Italy, BRC, develops, manufactures and markets alternative gaseous fuel products and systems in all fifteen European Union nations, as well as ten Eastern European countries, Brazil, Argentina, Chile, Australia, India, China, Thailand and South Korea. BRC’s operations are complementary to IMPCO’s through the end markets and the geographic breadth.

Bison Capital is a Los Angeles and New York based private equity firm that makes growth capital investments in middle‐market companies, public or private, for expansion, acquisitions, and balance sheet recapitalizations. The firm’s primary investment focus is partnering with entrepreneurs and management teams seeking capital to grow their businesses. www.bisoncapital.com