OK 3.4L swap if a guy was to get a low milage (or fresh rebuilt) 3.4L with auto trans, and t-case....say out of a wreck 4runner... What all else is involved? ECM/ECU for sure.... Diffs, drives shafts (rebalanced)... might be worth picking up the whole wrecked rig for parts... Lets see 150 HP in the 3.0, and 212HP in the 3.4L if I rememmber correctly (but it is 2am)... That is a nice HP gain, plus the lowered milage.. What should it cost to do that swap if you had the wrecked 4runner resource? thanks... I have 193k on my 3.0, and it is runng very strong now (very minor leak rear main went away after engine fluch, and AMSOil change over), but I know some day It will go away on me, and since it's currently a restore project, I might as well start looking for the prefect donor. That way I will have it when it happens. And I might get some new front leather seats out of the deal... Could probably get a little of the funds back parting out, and off the parts from the 3.0 drive train...