LOL!
That's why they call 'em the STEALERSHIP! Yes, the intake tubes and ignition coils will have to be removed, the stealership wasn't lying there... I could change out the spark plugs and air filters in about 2 hours taking my sweet time and using a torque wrench and anti-seize (both items I'm sure a stealership don't use).
My itemized list of charges:
1) spark plugs - NGK DILKAR7B11 (1406) $21.3 X 6 = $127.8*
2) throttle body gaskets - (16175-JK21A) x2 = $12
3) air filters - (16546-JK20A) X2 = $32
4) labor rate @ $60 an hour = $120
Total cost = $291.8
* = you could use copper spark plugs and save over $95, though they would need to be changed at 30k miles or sooner and not @ 105k miles!