The Kauhsen WK was used as the basis for the Gian Paolo Dallara designed Merzario A4 car, but this did not improve from the performance of either of the cars, failing to qualify at the remaining World Championship rounds.
O Kauhsen WK utilizouse como base para o Merzario A4 deseñado por Gian Paolo Dallara, pero isto non mellorou o rendemento dos coches, non logrando clasificarse en ningunha das restantes carreiras do Campionato do Mundo.