Where is the low roller in a 4l60e?
At this point it will be an empty case with the low/rev piston in it.
To get to the foward sprag you have to empty out the foward drum, you don't really need to compress the spring retainer and take the pistons out unless there's a lot of metal. So that's less hassle and special tools. But it would be a good idea to air check the pistons when the clutches are back in.

