Just purchased a 2005 Tocoma Pre-Runner with the 4.0 V6 Engine. The truck had only 21,000 on it when I purchased it on 12 April 2007. I converted to Royal Purple Motor Oil immediately and replaced the drain plug with a oil drain off/on valve from Lubricant Specialists. I replaced the stock air filter with a K&N. I am a do-it-yourself and am wondering when the time comes to change the plugs, how will I can access to them. The passenger side appears to fairly easy. It looks like all I have to do is remove the air filer and and can easily gain access to the three plugs there. The driver side looks like a challenge for sure. Any ideas out there please.