Hi guys, it’s completely workable. I did my 6 plugs without removing the intake manifold. But have to remove wiper cowl plenum, pretty simple. In short, the front 3 are easy and straight forward, 15 min job. The back three, took me 2.5 hrs, as was 1st time and I had to make sure all the things pulled off back exactly the way they were. The rear center one and driver side one are easy, but the passenger side one took me longer to undo. Find yourself a good mat that lay one the engine bay and so u can lay onto it. A handable mirror and a torch be handy to inspect. The tools are as what u see from the UTube videos. All working and $1,000 saved. Plus, mine is 2011 Toyota Aurion, 2GR FE, done 190,000, km, once I got it was 100,000, as I found out the pre owner done it as 6 plugs are Denso and mine putting it are NGK, only costs $130. Yes, u can do it. Be patient and have fun. Cheers
