@#88
No, the main problem with a very low single-ring-Piston will be the valve pockets, which will reach through to the upper ring groove. I think I will take a SR500-Piston from Wiseco, (they are easiest to get here,) and maybe try to get a 3mm excentric wrist-pin (because SR-pistons have about 2-3mm lower compression heigth) That won't bring me much displacement, but it is a reliable, and comparatively cheap solution. Finace is the next major problem momentarily...
Cheers,
Hans