64 door on 66 Barracuda

i have what I believe is a 64 door shell on my 66’
It had the key hole style lock (large) and I cut out and welded in the more modern 66 style from the original door.

When installing the door latch I had to cut and modify the opening to accept the newer style latch (larger and one mounting screw is off.)

Now I’m having trouble with the inside door release lining up. Are those different also?

I had no idea the door shell was so different between a 64 and the 66’ I also did not know DVAuto parts would sell me a 64 for my 66- side note they sold it to me over 10years ago empty of parts- just a shell and now it’s painted and hung and I’m finding a lot of differences after the fact. Very frustrating. I’ve had 10 years to figure it out so I’m not blaming them. Just need to know what else needs modification.
Thanks,
Joe