THE GREATEST GUIDE TO EJ20 MOTOR

Im inquiring 2800US obo for this setup. Its a bare engine with all sensors, no intake manifold or exhaust. If you intend on reduced balling, dont trouble submitting.k20a2/ k20a3 blocks Is there any important dif. between both of these. I'm chatting just the blocks. As in would a K20a2 block be considered a better option in sleeving more than the A3