Motor swap for isuzu trooper 2002 3.5l v6?

The answer i'm after is a motor to replace the 3.5l, that will bolt up to the same transmisson. The motor is blowed up after 80,000 miles with oil changes every 3,000 miles. I looked the motor problems isuzu has on all there 3.5l with bad cranks, cams and etc. There is no rebuild motor in stock because the motor were bad design. I don't want to put or rebuild a motor because i"ll always wonder when is this one going to blow up. The transmisson is a chevy design. What motor will bolt up to the transmissson and p the obd?(emmisson test)