I have a low mileage blacktop engine, so no intentions of reboring for using c20lets. I am looking out for a single cheap blacktop piston and rod, because I have a set of silvertop pistons/rods, and I want to see what I need to do to fit the blacktop pistons to silvertop rods, as I have the tools to do the job myself. This drops the piston 4mm down the block. If I find a cheap piston, I can have a play with nothing to lose.
I understand this was covered in a fastcar or fastford mag a year or so ago if anyone knows which one, please let me know so I can buy unless you can send me a scan of it.

What bore are S3 pistons?

I am looking out for rs rods and pistons.