esreverlluf,
If the two B767 variants that you describe are indeed identical in every way, excepting the engines, the answer probably depends upon whether the Takeoff thrust delivered by the (differing) engines is also identical, or not.
If the Takeoff thrust is identical, you'll have to dig a little deeper for the answer. If they differ (which they probably do), then Vmcg and Vmca will be higher for the higher thrust engine, thus changing the V1/VR/V2 speeds which relate to Vmc.
Another factor to be considered is that the two different variants may have been "mission optimised" differently. The manufacturer can choose V2 starting from V2min with no defined upper limit. Choosing the lower (V2 min) optimisation will provide improved runway performance, thus a good choice for short / shortish runways, but paying a price in degraded OEI gradients impacting upon obstacle limits. If a higher V2 schedule is chosen, then runway performance will suffer (not a problem if you're operating out of long runways) but OEI gradients / obstacle performance will improve.
Regards,
Old Smokey