Advice - To remove rocker covers?

[Random24234]

I'm just embarking on the long list of tidying little things up in the engine bay, and quite fancy getting the rocker covers (AJP 4.5) powder coated, as they look severely neglected however having a quick squint at the workshop manual, it would seem it might not be so straight forward?

Is this fairly easy to do? I was hoping it was a case of just undoing the cover bolts then lifting off the covers but i see there is mention of only taking one cover off at a time... Would i be correct in thinking there is no gasket its just silicone sealant?

Any advice or words of wisdom would be appreciated.

[Random24234]

Thanks for all the help

A quick couple of follow ups, does anyone have the bolt sizes and is it safe to replace them with stainless?

The second question is a bit of a odd one, I've owned the car now for six years and she's been running just fine... Yet i see on the workshop manual there should be a passive air pressure sensor pipe connected to the N/S airbox (this explains the small hole at that end i found a while back) I don't see any loose hoses in the engine bay and none of the garages over the years i've taken it to have mentioned this... Anyone else had this connection & pipe go missing?