please show mainly how to access all 6 plugs

hello ther eif you don 't have any experience changing plugs . l will strongly sugest to take it to a mechanic shop , cause this is such a great car , and if you dont do it right you can end up crosstreading your aluminum head(s) and then it will be very , very expensive to repair , they should'nt charge you more than $40.00 to do this tipe of job. hope this helps.

Victor S makes a very good point. If you can not work it out it is better to take it to someone who can.

Go on a lexus gs300 owners website, it will show you step by step

The back 2 are nearly IMPOSSIBLE to get to without removing a LOT of surrounding parts..

It is not a $40 job as suggested, but it will cost $200+ to find a mechanic who has done them before and often.

Do not attempt this yourself, but here is a link to doing it on an RX-300, which is very similiar in procedure.

http://clublexus.com/forums/showthread.php?t=264967

Good Luck

ED