On stock and
JCW cars, yes. You just need a plug socket and maybe a star driver to take the IC cover off (4 small star drive bolts) ... but i have a feeling the stock IC cover doesn't even cover the sparkplg tops so you might not have to do theat. The GP IC cover does block 3 of thwe plug tops though and the cover has to come off to remove them (the IC itself stays in place). The plugs come gapped out of the box (the NGK ones anyhow) so its bolt out bolt in job done. Still might be an idea to see if there are any fault codes being picked up, as this could save you a lot of time and cash.