The 8000/9000 models are only found within S/N range of 350000 and 380000, the last of the "real" HVA around 373000 after that, they are marked FFV or FFV-HVA, then, FFV changed the names to Standard, Monte Carlo, Lyx and Sportskyttestudsare. HVA used 1970 name in Europe (see below).
Also, as per 8000 and 9000 were Tradewinds names, they are often stamped "9000" or "Tradewinds, Inc. Tacoma, Washington-USA, Husqvarna Vapenfabriks AB Sweden" and other variants. Below is a reopst that explains the links betweens models and production dates.
In Sweden, for the same period, they are known as being "1970" - "Standard", "Standard MC" "MC Lyx", '"Sportskyttestudsare"... it quite followed normal HVA denomination.
Then, you have the HVA-FFV-CG ones, caleed "1900" - "Standard", "Standard MC", "Lyx" and "Trofé" and "Sporter" - these have SN starting by "5"
The American and Euro models sometimes differ, though. You will rarely see a "Standard" or "MC" rifle here and the "Lyx"
Then, you got the CG made rifles, which ended up being called "Grade II" or "Grade III" and even "Grade V" and "V/T", "Continental I and II" "Swede" here, SN starting by "6"
In Sweden, they were called their "standard" names, so, Lyx and so on.
Now, for a Euro-NA comparison (but there may and actually there are some slight model difference)
For the "3" serial (HVA) - 1967 - 1969
Standard = none
Standard MC = none
MC Lyx = 9000
MC Special = 8000
For the "5" serial HVA-FFV-CG - 1970 - 1973
Standard = none
MC = Standard
Lyx = Deluxe
Sportskyttestudsare = V/T
All in all, with the "6" series; - 1973 - 1979
Standard = Swede
Standard MC = Swede MC
Lyx = Grade II
Trofé = Grade III
Presentation = Grade V
Sportskyttestudsare = V/T
https://www.canadiangunnutz.com/forum/showthread.php/486796-Husqvarna-Sporting-Rifles-####-ALL-MODELS!!!/page157?highlight=Carl+Gustav+1900