the only scene you would need Is detective Bedsoe spilling Coffee on himself so that part is really short in seconds.
Try to export that scene raw at whatever it is de-interlaced, and match it to as Big Rob said the French Version Using the US cut Laserdisc as a reference for the framecount of that scene.
Sort of Manually de-telcine a short clip by deleting the extra frames. Or just use the Laserdisc for that shot but yeah sounds do-able.
59:41 After Connor says goodbye to Rachel, only the cinematic version features a shot of detective Bedsoe, who's sitting in his car in front of Brenda's appartment drinking coffee. This shot isn't in the DC.
+ 6.6 sec.
Aside from the Logo and the Audio at the end "I Want to go home" after the quickening Everything is in the French Cut.
As Far as any other Material is concerned outside the Deleted scenes with no Audio Here is The footage and audio I have found.
There a Side shot of Connor walking past a pillar in the Parking Lot Fight Which is probably the original transition for "Kill Mcleod! Kill Mcleod!" scene
Mssing Animated Lightning Strike Kurgun Looks Down (Ramirez Battle the Kurgun)
Missing Splash for one of the Silvercup Letters Falling down in the Final Battle
Mcleod drops his sword close up and Deleted animation from Final quickening (3 or 4 shots Alternate edit)
In the Alternate ending for Highlander 2 I think they lifted the Sean Connery Voiceover to close the film it's the same spoken in the bathroom of his house echo.
Extra Music in Church Scene plus some alternate cues.