The procedure, unfortunately, for your car is the same as one of the XC's. You'll have to cut a hole in the floorboard, or drop the rear suspension out and drop the tank. I'd start by checking the fuel pressure and see where that leads you. If you see problems there, I or someone else can direct you to the write-up someone did about replacing one on an AWD model.
The exhaust consistently smells like sulfur and when the car reaches normal temperature the car stalls more frequently.
This, to me, however, sounds like an air issue rather than fuel. It's way overcompensating for something, either an airhose is loose, or the MAF is dead. I did the exact same thing to my car last weekend when I neglected to clamp down hoses all the way, and it happened when my airflow sensor died before that. Can it run any better with the sensor unplugged entirely?