I know the feeling......but mine isn't as catastrophic as that, it's just boiling up in the header tank......like a lot on here I'm finding my way round theses little monsters.....and there are more experienced guys on here, but it could be the thermostat that has stuck if the cars been stood....mine has only got 17k on the clock but was stood for eight years so I don't know if that's contributed to it failing....ive gone for the copper replacement head gasket as the consensus is they are better than the toilet paper ones....😂😂 I feel for you I really do....as they are such fun to drive when they are working ok....I've yet to do mine so she's stuck in garage....gonna bite the bullet soon and strip it down, get head skimmed and hopefully that'll sort it....let us know how you get on with yours and if you find out the reason for the faliure, it all helps in gaining knowledge and experience......good luck 👍