Yep they are the same coils I fitted.  Have a read of my build thread under member rides and a recent post (in April) in another suspension thread were I spilled the beans on my coils.
http://www.aulro.com/afvb/modified-z...usp-setup.html
I plan to order custom coils that are about 440lbs and about 540mm free length to return the rear to near OEM 130 load rating and a the lift of 2".  The alternative is air bags so I can adjust height and firmness as required.
If you have any further questions feel free to ask.
MLD