1999 Expansion Valve

[solar4]

I am looking for the best way to access the valve to replace it. Do I need to go through the glove box and remove the blower assy (from the right)? Or do I need to pull the dash out (access from above)? I can see the HP & LP lines where they come through the right side of the firewall. They immediately make a 90 turn following the upper backside of the firewall over towards the center of the car.

Any tips would be greatly appreciated!

[Mole]

sounds like the A/C ?

(either way i have no clue how to attack it)