The year 1991 they used the Lola L91 chassis, which was faster than the March. When they got Danny Sullivan as driver some good results were expected. Best race was 4th place in the Gold coast race in Queensland Australia. At the 3. race, Phoenix Az. the Alfa had a good showing, actually leading a couple of laps. Alfa/Danny Sullivan totaled 11th place that year. Sadly the 3 year Alfa Indycar project ended without the great results. Alfa was developing 5 valve heads for the engine but it only ran for the last races without significant improvements in power. Interest in Alfa racing in America was declining, so was sales, so at the end of 91 the project was ended according to original plan.
TW.: have looked at your link, which is about the 2 previous years, and the problems with the March chassis. Both Guerrero and the March chassis were dropped in favour of Lola L91 and Danny Sullivan as driver for the 91 season. The 2 first years were considred as developing years while the 91 season was supposed be the year of results. Unfortunately even with one of the best drivers and the same chassis as the others used, the Alfa engine did not bring the best results. Possibly one more year could have helped improving the car, however plans from the start were to stop racing at the end of 91.
