Thread: stock springs/struts

This is probably what you saw. This wass a custom car for the Sema show...

For the 2001 Specialty Equipment Market Association (SEMA) show, the Grand Prix 40th Anniversary edition was tricked out as the Grand Prix GP40, with GM Accessories provided by General Motors’ Service Parts Operations (SPO).
“The Grand Prix GP40 show car offers absolute performance, with no sacrifices,” said Jerome Thiebaud, Pontiac Grand Prix assistant brand manager-product. “It’s a showcase for the kinds of performance engine parts, as well as chassis and suspension components and other items, that GM Accessories is making available for current GM products.” The GM Accessories-provided vehicle-lowering package consists of new front and rear adjustable springs, adjustable front and rear dampers and 17-inch Z-rated tires riding on forged aluminum wheels. There are also GM Accessories-provided performance brake pads, and drilled and slotted brake rotors, front and rear

Stock is not adjustable.