I think I can help with this. Quite a lot f research has gone in to ALL aspects of this rig, not just how the metal section looks, including fabrics, weaves, all the additional hardware that is required for the straps to get this as close as possible, including rivets through the "white" webbing where the final rings are located. In fact, I think the rivets are the only parts of hardware that have not been custom made to replicate this harness.
I spoke with the awesome guy who makes up the replica stainless steel buckles and jetpack hooks, who is currently working on prototypes of the additional hardware for this project too, which includes all the webbing buckles etc and the lower jetpack hooks too. He tells me they will be with me within the next day or two. I can then produce the first finish rig 
More updates coming soon.
Rob. :cheers