Help ID-ing early S90 original piston/cylinders

[dennis 356]

Hi guys,

What would early S 90 (1960) original pistons and cylinders look like/denomination, Mahle 4 ring, 3 ring, long skirt, short skirt?
Cylinders light alloy?

Alternatively what would be a good substitude piston/cylinder set for an S 90 that can be sourced nowadays?

Thanks,
Dennis

[dennis 356]

NADA?

[Starbucket]

If you have the money buy some Nickies (LN Engineering).