Honda blocks (including OEM sleeves) have been proven over and over to be reliable under a healthy a/f ratio. Reason why people experience warp often is leaning it out. There are many 10-11sec stock block Hondas out there. The only reason why they have to rebuild is the OEM rings are the weakest link. Other than that, the blocks are still smiling.
This is why I opted not to sleeve. My goal is 400 whp, and I don't think its completely necessary.
I'm not doubting the integrity of the OEM block, but for a DD I wouldn't go closed deck. The closed deck 4g63 is Cast, its a whole different ball game.
Anyway, off topic. OP is sleeving, added assurance never hurts.
h:
::ibsomeoneflamesmygoal