on a recent earlier reply of mine to you I provided links to free Toyota factory service manual downloads which show in great detail how to rebuild an engine from the ground up if need be.
Sidney® ™
Repairs TV's,VCR's,home/car audio out of my apartment
E-mail:sidneybek(at)yahoo.com
Dartmouth,Nova Scotia
Canada
Is the problem that you are not finding the info in the manual?
There are two main components that need to be addressed: the cylinder head, and the block. You need to be concerned with making sure that measurements are within specs, gaskets/seals/plugs are replaced, surfaces are checked and machined if needed. Replace the timing components, pistons, and the different pumps. Have the head checked for cracks, and get a valve job ... or you could just buy an already rebuilt head. Anything else that looks worn should be replaced.