130/ 160

[zsnotdead]

is the difference in a 130sri and a 160sri as little as a engine chip.

[dh.dti]

it could be one is 8v & one is 16v, like the vectra

[john_k_sri]

Both are 16v.

[I cdti]

Depends on the Model Year.....

MY 09&10, all 2.0d (A20DTC=110PS,A20DTJ=130PS,A20DTH=160PS) engine hardware is the same, the ECU has different maps.
MY 11 (A20DTL=110PS,A20DT=130PS,A20DTH=160PS) the turbo is different on the 110/130ps versions.