was the 1jz an option for an 89? im turning up 1990 production dates.
Quick information
GA70 1986.5-1992 - 1,988 cc (1.988 L; 121.3 cu in) 1G-GTE turbo I6
JZA70 1990-1992 - The 2.5 L (2491 cc)
1JZ version was produced from 1990 to 2007
http://en.wikipedia.org/wiki/Toyota_JZ_engine#1JZ