aye, easy enough to replace, just have to dismantle part of the engine bay to gain access, mine is similar to yours, just turned 4 and 29k miles... as i said, i didnt bother with plugs or injectors... i dont think there's any need
guide linky... cheers to the original poster btw!!!
http://www.e90post.com/forums/showthread.php?t=174217