Boreing is not worth it.
.20 is the most i would go even at. Even boreing over does not yeild a great hp gain. If i remember right when i was building my motor i talked to zooomer he stated it was at most 10-15 hp extra. I did it anyways to say what the hell.
The most i would do on the block if you are wanting to touch it. Stock specs diamond pistons.
Big guys at zzp and intense ran on a stock block. If you have it tuned right and an monitor what your 02s and such you will be fine.
If i ever build my car back up. At most i will due new rods and pistons
