For stock calipers I'd just suggest rebuilding them. I think the caliper rebuild kits from Toyota are like $20-30 (enough to do both corners). There are an easy job to do. The only thing special you really need is compressed air to pop the piston out.
when i did the brakes on my 84 i found that it was less hassle and only about 5-10 dollars more per caliper to just buy rebuilt calipers, plus i got the parts in a day where the rebuild stuff would have taken about a week to get in.