The shocks I'm looking into have "28 stage Bump & Rebound damping adjustment" Right now I'm waiting on a response from them about their hours of operation. They don't accept PP and I'm not comfortable e-mailing my CC info. So I need call and it looks like they are 8 hours ahead of me.
I bought a set 10 years ago through a group buy off the Mopax e-mail list. I think it was through "Apex North America". Pretty sure it was a special order deal. I have a phone number you could try. Not for sure if this was business or personal, so I will send it to you PM and you can find out.
G480 are the front. Rear needs bushings which you have to buy separate.