Ref 8/8b can be upgraded to V2 with new V2 board and 200W SMPS.
That will be equivalent to Ref 8.5V2.
No, we can't sell you the chassis to turn it into Ref 8.5V2. We can work with your dealer/distributor to offer you a trade-in discount if you must have Ref 8.5V2 chassis (you want to do that only if you intend to upgrade to Ref 9V2 or the SE later).
Contact salesteam email for sales related issue, don't post your follow up here.