Best online retailer for Lexus parts in Ireland or UK?

[Ohoopee]

I was wondering if anyone could recommend a good online retailer based in Ireland preferably, or the UK that carried hard to find Lexus Parts.  I have a 2001 Lexus IS200  I went to get in my car this morning and noticed that one of the Lug Nut Studs had fallen out and taken the lug nut with it on my Back Drivers side Tire.  Obviously I need to replace it and this is work that I feel very comfortable doing myself, the problem is I can't seem to find any of the lug nut studs or even any of the lug nuts that seem to match perfectly...I did find some lug nuts on eBay.ie that claimed to be for my car but they don't look exactly right.  It is also getting close to time for me to replaice my Spark Plugs and I also want to replace the Spark Plug leads.  Finding Spark Plugs is no problem but I can seem to find the leads for the life of me.  Any suggestions?