I agree with @55Buick The Pickup motor with Stage 3 Supercharger can only have ~750hp and 1200 Nm, while Moonhawks' engine can have even stage 4 supercharger that gives it over 2000hp. You should consider that OP, it would be more Mad Max style than ever: 2000hp classic muscle car, lifted, off-road. I would gladly drive that.
A bit more work done, made a roll cage to stiffen up the back of the pickup, and done some more work on parts that can come loose