I understand where you are going with all this, but you do realize that the stock SOHC KA has a compression ration of 8.6:1. So I don't think it's really necessary to continue to dish out the stock pistons. The weak point is the ring lands, which dishing them out isn't going fix.
The current block will remain stock while I build up my spare. Following which the built block will go in and this one will be built up. That way I have a built spare for when I smoke the other.
Golden wrote: I want to take back my statement about shortening the connecting rods. The literature basically rejects this as a method for lowering compression ratio using stock block and head. It seems piston selection and/or modification is the only way. Iff you can be certain about how thick the top of the piston is and the extent to which they are surface treated, you could have them dished and re-treated for not too much money. With respect for the engineering of the stock components, don't dish all the way out to the edge of the piston, leave about 8mm untouched. No point wasting all that expensive chamber design.