Portland Testing and 1st Practice

Portland, Ore. – July 23, 2004  Taking advantage of a promoter’s test 
day at the Portland International Raceway, the GMAC/Trenton Forging #5 
GTO team took a look at different options as they prepared for Sunday’s 
SPEED World Challenge GT Round 5 that will run in conjunction with the 
Portland Grand Prix.

“We tried some things that got the car pretty lose,” said driver, Stu 
Hayner. “But, quite honestly we’re not sure if the lose condition was 
completely due to the changes or the extremely high temperatures we’re 
experiencing here in the Northwest. The track was pretty slick. 
Regardless, we’ve been struggling with a push condition all along, so 
at least we can adjust back to find a middle ground. I’m not sure we’ll 
be able to use what we learned, but it will definitely make a 
difference when we get to Mosport next month.”

The team was also required to add baffling to the system in order to 
bring the cars decibel readings within the raceway’s required 110db.

“It’s a bit odd,” commented team owner, David Moxlow. “I have 
considerable experience in this area due to our company’s interaction 
with the city where we have our plant. [Trenton Forging is located in 
Trenton Michigan] Hard copies of our numbers at Infineon last week 
reported us at 104-105 db. The Series’ requires 110db… as does the city 
of Portland. How we would be under one day and over the next is 
questionable. We’ve added some restriction to the exhaust and the car 
is compliant now. We were taken by surprise, though.”

Hayner’s times Friday morning showed him running mid-pack as the team 
continued to dial the car in for Sunday’s race. The race will air on 
PEE,   August 1st at 1pm EST.

GMAC Commercial Finance, considered a leader in its segment of the 
financial services market, provides accounts receivable management and 
financing, asset-based lending, equipment finance/leasing, retail 
financing, structured financing, and supply chain management services 
to a wide variety of clients in diverse industries. Loan facilities are 
in the $2 million to $200 million range. With locations in the United 
States, Canada, Hong Kong and the United Kingdom, the Company is 
positioned to provide lending services worldwide.

Trenton Forging Company from Trenton Michigan is a leading producer of 
custom impression die forgings to a wide variety of industries. They 
have a strong reputation as a supplier of choice to many Tier 1 and 
Tier 2 automotive/light truck suppliers. Trenton produces multiple 
cavity die forgings to meet customers exacting specifications and 
offers a wide range of high quality custom forging products with 
exceptional customer service.

In association with Trenton Forging, Autosport Development competes as 
part of the SPEED World Challenge GT Series. All events are nationally 
televised on SPEED channel (formerly Speedvision). In 2004 the SCCA 
SPEED World Challenge series will visit Lime Rock Park, Mid-Ohio Sports 
Car Course, Infineon Raceway, Portland International Raceway, Mosport 
International Raceway, Road America, Road Atlanta Motorsports Center 
and Mazda Raceway Laguna Seca.

For more information about Autosport Development and the Stu Hayner #5 
GTO, visit www.GoAutosport.com

For more information about Trenton Forging, visit www.trentonforging.com

For more information about GMAC Commercial Finance, visit www.gmaccf.com

For more information about SCCA SPEED World Challenge, visit 
www.world-challenge.com