I could be wrong, but as far as I know, the Wisco piston, are the same configuration as the 2.2 non turbo. Except it has valve reliefs, and pin lock grooves.
Like I mentioned in my prior post the 2.2 non turbo piston does not have the pin lock grooves, so can't be used with the Molner rods. I have a set of forged 2.2 turbo, and non turbo piston in stock. I was going to use them with OEM 198 rods, but the machine shop ruined both sets of rods.
