yeah mate i did that while it was left on the car , and once all the rocker cover has been done i will venture onto the 190 inlet pipes but only once im happy with the rocker 1st , i think i did a pretty good job considering i didnt take it off and didnt use any type of machine too.
basically mate i used 240 ,400,600 , should of used 800 next but went straight onto 1200 and then finally 2500 but from the 600 i used meguars ultimate compound as a lubricant as it does a fantastic job as well as fill in any scratches etc ..
im sure the 190 inlets are basically the same procedures as ive done but are more fiddly i think (fieldy did the inlets on his )
and yep it first started like this :