i own a 96 2.8 diesel hilux . the engines are underpowered to the shithouse and with big wheels and 4.8 diffs she would do 350 km on 50 litres. so i knocked up a turbo kit using a gt 25 garrett and screwed a bit more diesel into it ,big improvement ,but they get hot very easy and after a couple of years it dropped its guts. so i just put a 1jz in it ,smartest thing i ever done. if your surf is a factory turbo diesel you already have the 3 core radiator and the r151 box so your off to a flying start. my brother has a 4x4 dual cab the same as mine with a 2.4 petrol [excuse me while i chuck] and it uses more juice than my 1jz, so i will put a 2jzge in that once we get all the bits. cheers bigwad