Also don't forget the base Dmax is 500Kgs lighter than the base GU. The 4JJ1 is a nice motor but its a hard ask to compare a old style diesel to a modern diesel. I would love to see what a TD42ti could do if it had a modern electronic injection system.I had a NA GQ for years. Never turboed but should have. It was the second slowest car I ever owned. The first slowest being a NA SD33. Now that is slow.
Anyways our 4JJ1-TCX in our Dmax runs rings around my GUTD42T. If it lasts as long well that will be another thing.