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4G64 Block & 4G64 DOHC Head

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Any 7 bolt 4g64 will work if you want to go that route. Be cautious that The 2000+ 4g64 in the Eclipse is not the same as prior blocks used in the earlier Eclipse. The same goes for the Galant, they started using a different design on the 4g64 block around 99 or so. I've mentioned it in my "4g63/4g64 swap" thread.

Yes you can use a 4g63 DOHC head on the block. If you use a 4g64 block from 95+ then you'll need to insert freeze plugs (or other means of sealing...) into the deck surface in 5 locations (also mentioned on my thread) because the DOHC head does not use these and you will have bad issues if you don't.
 
How should I know for sure which 4G64 block will fit in place of my 4G63 ? What are those differences?
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