do not be afraid of that job,is a easy swap,took me 5 1/2 6 hrs to swap mine shocks and springs,in my garage on jack stands by my self (first timer to)
its cake... really simple. i can do shocks and springs now for all 4 corners under 2 hours. its pretty strait forward, and i never had an issue with the top nut... juse use the appropriate sized allen wrench and the longest closed end wrench you can find... lil time consuming because of the repetition, but still easy... but after my trilink... well.. everything is easy by comparison.