See this thread:
" AC Cars plans to relaunch in Europe " ?
Some inaccuracies in the article you quote - the MK IV is not now in production, this should read Mk VI. Neither the Mk VI and Mk 11 have the 'Cobra' moniker and I doubt more than a handful of either model has been produced in the past few years.
And the 378 is more a modern day 428 Frua than a Cobra.