Best engine i ever saw in SIII landy was a Naturally aspirated 6.4 litre diesel taken out of a Massey Ferguson combine. Went like stink, but was extremely heavy... One of the great things with the SIII, any engine will go in, all you need is the know how, I stuck a 2.5 litre turbo diesel engine in mine on a range rover box, lots of cutting about on the chassis, drive shafts etc, but double the mpg and went like rocket.. oh what fun.. wish I could afford another....