Where is AC low pressure port 98 C230?

[alpine951]

AC not working too well. I want to check the pressure. Anybody know where the ports are?

[SLAMMED_C]

there is one down in behind where your oil filter housing is and to the right (if your standing in front of your car looking back, its hard to describe.. wish I had a pic to illustrate it for you!
and then the high side is behind the front fan grill.