HOW HARD TO REPLACE SPARK PLUGS ON VOLVO PENTA 5.7L EFI GSi SX-M ?? WHICH KIND?

[gowestwardho]

I just replaced the water circ pump, impeller, and fuel/H20 separator on my VOLVO PENTA 5.7L EFI GSi SX-M and was wondering how hard it would be to change out the spark plugs (I also just replaced the 16 plugs on my Jeep GC Overland Hemi, so I'm on a roll). Is it pretty easy to do this and are there any special tools required other than the usual suspects?

Any suggestions as to which plugs I should get? I got the Bosch Iridium for the Jeep but that makes no never mind when it comes to the Penta.
And what the gap should be as well as the torque setting?
Advice?

 

[Tail_Gunner]

MR43LTS 708 reach...ok each has there own flavor so 708 reach or length...ngk what ever kinda like a oil thread but the .708 reach is important when you cross reference.