'70 Dart (6-cyl.) moved ignition coil, need longer ignition coil wire

Hello, I have a '70 Dart (225 6-cyl.). Like a lot of people with the slant six, I moved the ignition coil over to a more easily reached location.

Now, the ignition coil to distributor wire is a bit too short...it fits, but it is stretching it and afraid it will come loose.

Will the ignition coil wire from an 8-cylinder work? any other tips? I just need a longer wire by about two inches or so. (I don't want to have to move the coil again, as that would require drilling again).

Thanks