This radiator specialty shop located in Washington state has original 2 row/core brass radiators which are excellent in quality and many Toyota dealerships buy from them:
http://www.performanceradiator.com
all you do is replace yours with the bigger 3 row/core brass rad,avoid the V6 rad as you may need to make a few small mods to get it to work.If you need more cooling install a 180 degree stat instead of a bigger rad.
180 degree stat (82 degree Celcius) Toyota # 90916-03083 (1975-80 20R,1985-87 22RT-E)
Stat gasket # 16341-35010=$2.70 CDN
Sidney® ™
Repairs tv's,vcr's,home/car audio out of my home
E-mail:sidneybek@yahoo.com
Dartmouth,Nova Scotia
Canada
1985 Toyota 4-Runner,solid front straight axle,factory cruise control,sunroof,22R-E,W56,RN60LV-MSEK,rusted rear step/towing chrome bumper with 244 000 KM