So my wife was hit yesterday in her 2010 Mazda 5. Unfortunately I suspect the insurance company will write the car off as the entire driver side is damage. The mirror is gone and the headlight and bumper are damaged as well. I can't see them repairing that when it has 350k on it.

So, my wife has always loved the 5 and after shopping around for other options she still keep coming back to the 5. However, the gen 1 she had was fully loaded and I added multiple after market accessories. I'm just wondering if anyone knows if the following is interchangeable?

1) Leather seats? I have no idea on this one.
2) Thule bolt on roof rack? I believe is compatible
3) Class I trailer hitch and harness? (I suspect incompatible)
4) Wheels? The specs look pretty close but not exact.

Thanks guys,