I didn't really read the post but it's pretty much a direct swap for you (24v SOHC for 24v SOHC) I recently put a 6G74 from an '04 sport into my '99 Montero. A few little things were different like the throttle body and one solenoid so i swapped them from my original engine. I also had to swap oil pans and oil pickup but you won't have to since all sports and L200's are front sump.


As far as ECU's go i wouldn't worry too much about it, you could slap a 3.5 ECU into your truck and see if it runs the 3.0 but i would just do it. It should adjust for the extra air flow and if you really need to take the truck to an import tuner shop they'll do a reflash usually 100-150 dollars.