I will drag this post up again to beat a dead horse once more.
If I were building a truck and had to choose engines, no brainer for me it would be the 1HZ.
Now if I had a budget and had to pay 3000.00 for a 3B H55 split case combo(lets say over 200000KM) over a 7500.00 1HZ H55 splitcase(usually with vacume shift)(80 000KM), it may be a deal breaker.
Now if a customer came to me and asked which I would use, I would push real hard for the 1HZ.
After driving the 1HZ for a month now in FJ45, I just plain love that engine, smooth and very quite. Cold starts are little more than a almost invisible puff of smoke.
Also after standing beside Waynes 75 series at Pismo, I was floored at how unreal quite his rig was, not sure if it was the turbo or PI???
My 2 canuck pennies.