What carburetor was used on a 1987 Isuzu Trooper II 2.3 liter engine?

there are a couple of different factory carbs used and the parts store can tell you which one you have from the numbers on the carb, but weber makes a direct specific replacement carb for a 1987 2.3 gas trooper at about half the cost of a remanufactured OEM carb. The weber is a DGAS/ES 18930.032/020.