.40 over pistons for 1.8L

[S2_ITBVW]

Is anyone familiar with this piston?

http://www.summitracing.com/parts/UEM-9078-1-0MM/

I spoke with the tech line for Keith Black and they indicated that this was an OEM replacement cast piston. So I think the specs are right from a "legality" standpoint. However, the tech folks could not provide the exact compression ratio, only that it would produce the "stock" compression for the engine.

This is the application information:

Make VOLKSWAGEN
Engine Type L4
Liter 1.8
CC 1780
Engine Size 1.8L/1780cc
Beginning Year 1983
Ending Year 1987
Engine Family Volkswagen 4-cylinder
Application Notes Replacement for original equipment numbers 026107103Q or 027107103O.

Does this look right?

As always, thanks for your help.