Not sure on these items but I need some feedback on what I should do, optionsaustralia on ebay sounds plenty of car parts for integras and I was wondering if there worth it.

Im thinking of lowering my car so I'm not sure about these springs take a look:
http://cgi.ebay.com.au/FRONT-CAMBERS...3A3%7C294%3A50

Also I'd like to change my spark plug leads so i dont know if there worth buying and will i need a mechanic to do it for me?
http://cgi.ebay.com.au/SPARK-PLUG-IG...3A4%7C294%3A50