I have for sale a Stormforce CCC367 cover which can be used on either a 350 or a 370. This is the one that has pockets for the wing mirrors. Taken directly from the label this is a:
'4 layer all weather car cover Soft, breathable fabric, ultimate protection, unrivalled strength.'
Awesome hey! Comes in a smart bag and folds reasonably small so can be easily stored. This came with the Zed when I bought it and I've never had cause to use it. I've unfolded it just to take photos and was pleased to note that there's no damp smell to it.
The cover looks to be in good overall condition and free from damage. Looking on the internet these seem to be available for between £130-180. I would like £80 for this collected from Bury St Edmunds or it can be delivered at your cost via any courier firm you'd like. I regularly travel to Stoke on Trent via the A14, M1, A50 or M6 so delivery along this route may also be possible.
Any question please feel free to ask!