I'm in sorta the same boat. I picked up new shakles but need to get bushings. I've got an early 1980 fj40, so your mileage may vary with these part numbers.
Vitesse_6 had the right number for Energy suspension, but I haven't been able to find them in anything but a whole kit for the front or back.
Daystar also makes a kit for the FJ40, Part number KT02005 is what will fit my truck, but again it's a kit, which may be ok for you.
sor.com is the only place I've been able to find for buying single, non packaged bushings. I'm probably going to go with a local 4x4 specific shop.
good luck.