I rebuilt my I6 and a 22re out of a Toyota What did you need help with?
Just an fyi this could cost more than you think. We bored over the 22re .040 (to it's max) and with the new parts i.e. pistons, Piston rings, rebuild kit, gasket set, cost to have the machine shop do the work, ect... It came out to roughly the same price as a crate engine.
If the engine is in working condition than there is no need to bore over stock specs. One of the only reason people over bore is to gain horse power or just to resurface the internals of the motor (to make for a brand new engine). If the engine runs fine then suggest doing a compresion test and if the all 6 pistons are within 10 psi (I prefer 5) of each other that means your all pistons are wearing at the same rate, that's a good thing.