Upper rear shock studs for a 69 Cuda

I'm replaceing the rear air shocks for a customer's car and the went to take the upper nut off and and the stud is turning also....I'm like no big deal I'll put a wrench on from the trunk side like my 64 Valiant.....but this cuda is covered in that area...

How's the best way to get to these on this year of Cuda? Thanks in advance for the help guys.

Lee