K20a2/ k20a3 blocks Is there any key dif. among both of these. I'm chatting just the blocks. As in would a K20a2 block be considered a better option in sleeving around the A3? The A3 are so low-cost to come back by so I just planned to know. True warranty. https://2jzgtte14567.blog2learn.com/80471673/5-easy-facts-about-rb26dett-motor-for-sale-toyota-4a-ge-described