No just one cab, first I had the top stretched 9" and then made an additional panel for each side and secured it to the window section of the cab. I have a good friend who gave me a Series bulkhead, did some work on that to make it fit better.
Thanks for asking.
To answer the earlier post,
I live in Colorado high altitude, and never drove it that fast at sea level a different story. For a NAS Defender its quiet no sure its Lexus quiet.