USED RB26 ENGINE SECRETS

k20a2/ k20a3 blocks Is there any significant dif. in between these two. I am chatting just the blocks. As in would a K20a2 block be described as a better option in sleeving above the A3? The A3 are so cheap to come back by so I just desired to know.The ability to make a fairly easy 600hp completely inventory internally and retain factory amounts of