Hey Chip, the answer is, we don't know yet. This was an experiment for both TLC and us, since the 3.0 was brand new and not by a long shot a bolt-in replacement for the earlier 2.8. TLC's plan is to produce a kit that could be installed locally by a competent mechanic.
Incidentally, I've seen comments on other forums about this project, a couple of them saying, "They'll never make their money back on fuel savings." Those people either haven't read through the entire project, or they just don't get it. Our goal was to take a classic expedition vehicle that might otherwise have been on a downhill slope, and give it a completely new lease on life - new running gear, brakes, differentials, etc. - for about the same price as one would spend on a new Tacoma, Frontier, FJ Cruiser, etc., while achieving better fuel economy than any of them (and nearly double the original engine's), and reducing emissions significantly compared to the 2F. The fact that we did all that and also gained horsepower and torque was icing on the cake.