The truck is running fine for my purposes, though you wouldn’t want to take it on the freeway. I thought the additional horsepower might allow for more performance at higher speeds, but the controllers get warm and put the truck in Econo mode. Some of the hills around here are pretty steep and the truck struggles up the steepest ones at about 15 mph.
On my regular runs to the town transfer station (the primary use for the truck), the truck performs flawlessly. Acceleration is much improved over the old 230 6cylinder. In the 0-35mph range, the thing is marvelous! Silently (except for drivetrain noise) zooming off from my driveway, not needing a warm up period, no more gasoline or oil changes, no flushing of the cooling system, and I can fill it up at home anytime I need to!
If (and I just might if the stock market revives) I were just starting this project today, there are much better systems available to chose from. It’s incredible how quickly the EV market has changed in 2 ½ years. I would raise the voltage from my 144V to something like 400V in order to get into the better controller selection available. I would look at motors in the 200-300kW range to get more hill climbing capability and higher top speed. I would still try to keep the original drive train, but need another transmission to replace my “rebuilt” unit that jumps annoyingly out of 2nd gear.