We swapped a k20z1 complete short block into a dc5r that was starved of oil at the track and did some major damage. The k20a2 head bolts straigt on the z1 block, so i would assume that the only change would be ecu, if you are using kpro then it should all be fine. Dunno if this sheds any light, but the 24 will be much cheaper, a Z1 short block from honda was about 6 grand!! ouch!!
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