Ahhh - The GM 2.8 V6. This engine also appeared in my '90 Isuzu Trooper, in a fit of cross-corporate sharing designed to hold Isuzu over until they developed their own V6. In that boxy era, you could get a Trooper with either the Isuzu I4 or the GM V6. Curiously, both engines claimed the same HP (120); the V6 offered…