check with www.advanceadapters.com and get the free catalog or spend the $10.00 and get the better one. lots of info and part # it has been done. and go on e-bay motors and look at land cruiser parts under FJ40 some one has the adapters up for sale still, i think. sorry no link just remember seeing it the other day.
and use the search function at the top it has been talked about before, so you may find something. good luck. i am a chevy man (sorry)