Cross custom styling with Pro Stock brawn and you'll get Harold Prokop's wild '49 Ford. The former sedan rides on a custom Springfield Motorsports tube chassis and packs a 502ci Chevy that's both blown (intercooled Vortech) and injected (Street & Performance). Peek through the '67 Cougar windshield and you'll find a full custom interior with Tea's Design seats and Auto Meter gauges.