 Complete the following phrase:  During the 1996 portion of the 1996-1997 season Guerrero continued to drive for Pagan Racing in the No. 21 Pennzoil Reynard 95i-Ford Cosworth XB. At the season-opening True Value 200 at New Hampshire Motor Speedway Guerrero started 18th and finished 6th. Guerrero then drove a Reynard 94i at the Las Vegas 500K at Las Vegas Motor Speedway to start 9th and finish a season-best 4th. Starting at the Indy 200 at Walt Disney World Speedway the series began to use a different type of spec car with Guerrero driving the No. 21 Pennzoil Dallara IR7-Nissan Infiniti Q45 for Pagan Racing. The Infiniti engine was usually slower than the competing Oldsmobile engine and Guerreros best race with the engine was the Phoenix 200 at Phoenix International Raceway, where he started 10th and finished 7th. At the 