Dave,
Do Porsche encourage any sort of DIY maintainance at all these days, or is everything sealed and labelled up as 'contact your Porsche service centre'?
I've got to say it looks challenging, I can't even start to think how you'd get at the plugs, let alone change the tax disc.
H
PS
Has anyone ever tackled the water pump in an Esprit? (and not murdered their family and neighbours afterwards)