What exactly is the 5.9 TBI? I'm not familiar at all with the 1st gens. Is that the 5.9L 360ci gas engine in the 2nd gens or something else? I'm still learning on the 1st gensA W250 with a TBI 5.9L/727 would be an awesome start for a wheeler. Friend of mine has that setup in a Jeep and is very stout.