John's 66 Dart GT covertible restoration

Hey guys.
It's been a while since I have posted on the forums and in my build thread. I'm also irking on 2 Mazda RX7's as well.

I'm trying to get the car back on the front suspension. I've taken it off the clean the inner wheel wells off all the dirt and grim. Any ideas on how to get all the grim from the tight corners of where the upper a arm connects? The car is in the garage so a pressure washer isn't an option. And wire brushes aren't getting into the crevasses. You can tell the area I'm talking about in the above pictures.

Thanks guys.