instead of thread diggin other posts i thourght i might make a new one which will sum up all of the old ones plus new ones which others might make.
ive started to polish some parts to make the engine bay a bit sexier when the cover is missing

with polshing the ecotechs what parts are aluminium and can be polished?
so far parts which can/have been(by others):
Plenum chamber (lid and base)
throttle body
alternator housing (alot of work but it is possible)

fell free to add parts you have polished (pics as well if you have)

main question: What other parts can be polished????
rocker covers??? (what are they made of)
pullys?? (instead of buyin new ones)
any other parts

mitch =D