All went well.
We managed to get all the panels onto the new roof rails with a combination of tank tape, bungee hooks and ratchet tie down straps.

It was a noisy drive home but nothing broke or fell off.
The panels are basically in good condition.

There are two areas of structural damage. One is on the bonnet,

The other is on one side panel.

Both of these will repair easily enough.
The most time consuming problem will be the extensive gelcoat cracking which is pretty much all over every panel.
Overall I'm very pleased with what I've got for the money.
I suspect, in the end, that I will end up taking moulds from these to make new panels for my car. We'll see when the time comes though.