@pamelajstevens The engine from the Axiom will be a 6VE1.This model engine was also used in the Troopers. Both engines have the same intake, exhaust, and block with the difference being the stroke of the cylinders. So yes, it should work in your Trooper and fit your transmission as well. This is not to say that this will be a simple swap since you could still be dealing with wiring, sensors, and computer issues. Bottom line, possible yes, easy no.