John Zappia is a drag racing competitor from Perth, Western Australia. John races an HQ Holden Monaro in the Top Doorslammer category. He is the current Australian Champion and Elapsed Time (ET) record holder for this category (5.805 seconds).
On Sept 18th 2005, John became the first legal Top Doorslammer driver in the world to record an ET under six seconds, with an elapsed time (ET) of 5.967 seconds at approximately 242 mph (389 km/h).
John is also the current Australian Top Doorslammer Champion, winning the "Pro Series" Championship for four years straight in 2007/08, 2008/09,2009/10 and 2010/11.
Established in 1980, Procomp Motorsport has demonstrated the leadership in this automotive engine replacement market and racing industry.
Procomp Motorsport also is a pioneer in manufacturing and wholesaling a wide range of multifarious part numbers for high performance engine parts for racing industry.
To date Procomp Motorsport have a customer base of 40,000 licenced shops, engine re-builders, who in turn sell and relable Procomp Motorsport Parts. Some of these include JEGS and Summit Racing and drag racing teams direct.