From memory the 1JZ and 2JZ actually bolt up to an R154... the input shaft is the wrong length to just whack a 150 or 151 on it tho.
What you need is a locally made adaptor that bolts to the gearbox end of the A340 auto bellhousing for that motor and then you can bolt a G52 or W56 onto it... I am pretty sure the R150/1 adaptor would have to be designed as the guy who does them locally only has them for the G/W adaptor.
Good conversion... just finished a 2JZ-GE one in a Hilux, goes like a haunted S%$thouse
Steve