Access to the solenoids is tight, although less so on the V6, as there's no boost pipes or fuel pipes in the way. You access some from below and some from above. You have a gap of 4 or 5 inches between the cooler pack and the value block face.
You need to remove both the under tray and battery tray. You will then need to move the fluid cooler to the side, or remove it completely ,if you're going to be changing the coolant at the same time. You also need to drain the box, as the fluid level is above the bottom of the value block cover (traditionally the sump).
Once you can access the solenoids, you'll find them a right PITA to do, as you're pretty much working blind in the space you have. The 2 lower solenoids are accessed from below, while the 7 other's are accessed from above.
It took me 6 hours or so, but I did have to sort the battery tray clamp and did a video on repairing the brake duty solenoid too.