The toyota hiace ambulances have widder chassis rails than the normal hiaces , fitting a 1UZ into one is not as easy as it first looks. A frend has just done one, he thought he could get away with fitting a 1UZ and engine crossmember from an ambulance into his 1993 hiace, but nooo. Also had to chop away at the floor behind the fron seats. sump is very close to the ground aswell.