James - gasket make is BGA - here's whats included:

The oil sender I think came from a 240, and from what I can gather they all have the same sump plug thread. The VDO part numer on it is 801/4/41 if that helps.
Jay - you do realise the gauge panel is for a 240? I think one or 2 of the clips on the back have snapped, but it still seems to stay on fine.
Roop - unforunately, as far as I'm aware, there's nothing that will bolt straight onto the 360 for a brake upgrade. I think the 240 4 pots bolt on to the 360 hub, but you'll need to find discs to use with it. i have some vented Vauxhall Carlton ones that I was experimenting with, but didn't get very far with that! Rear shocks are still here, but as I said you'll need bushes to use with that.