February 2004 Attention: Members of Wescar Re: Dyno work on pro top line factory replacement cylinder heads part # 223 7694 167 The dyno test on January 10th, 2004 at Dynamic Performance in Quesnel yielded an 8 hp average gain between the pro top line head and the factory wescar legal heads. The average was taken between 4500 and 6000 rpm and all of the testing was done on the same day by Garnet Grimard, Kendall Thomas, Earl Thomas, and Sandy and Rod from Dyn performance. The test was recorded on video tape for later reference. After reviewing the results we suggest that we integrate these cylinder heads into our series this year for the teams that are needing to build heads and would adopt these as the offical Wescar head for 2005 season. Wescar board of directors should be able to add weight penalties to the cars with these cylinder heads for the 2004 season if the cars with them on show themselves to be domanant. We also suggest that during the tech inspection of the motor for sealing, the heads be cc' d for combustion chamber size and volume of two intake and two exhaust ports be randomly checked and recorded. In regards to the engine sealing and tech, we are recomending that all engines be teched by Wescar tech officals only. Contact Pat McCarville in Prince George, Brian Bettles in Williams Lake, or Ernie Perkins in Terrace. CYLD HEADS CAN BE PURCHASED FROM RONS ENGINE MACHINE 604 533-4454 OR C.A.R.S 1-800-563 4050 OR WHO EVER CAN SUPPLY PRO TOP LINE HEAD PART #223 7694 167 AND ONLY THIS PART # NO PRICE HAS BEEN SET BY WESCAR OR ITS DIRECTORS SO MAKE YOUR OWN BEST DEAL. REMEMBER OTHER THAN THE HEAD CASTING THE HEAD RULES STAY THE SAME. GOOD LUCK. THIS HAS BEEN APPROVED BY WESCAR BOARD sincerely KENDALL THOMAS GARNET GRIMARD BRUCE BENTLEY