By 1992, Spice began to develop newer designs to replace their older chassis, but the company would soon hit financial troubles before multiple cars could be built. Spice's final GTP chassis was finished in 1993, at which time the GTP and GT Lights Championships had been canceled and IMSA was adopting a new set of rules for open-cockpit sportscars in 1994. Spice built at least three new chassis for the IMSA WSC championship with new suspension and bodywork. In 1994 Spice won the manufacturers championship with Oldsmobile beating Ferrari. Spice also made available a kit to convert existing Group C and IMSA chassis to the new WSC regulations and some teams took up this option, with some opting to carry out their own conversion and development work, without factory assistance. Some of these heavily modified designs would still be racing competitively until 1999.