Not sure if you know, but the tunnel is not sold by itself. You have to buy the whole bulkhead/tunnel assembly. I bought one last year, $1300 from the dealer.
$1300 for bulkhead/tunnel, I think around $800 for the tunnel alone. You can buy them separetly, advantage of tunnel/bulkhead is everything is plug and play, you don't have to drill out/replace rivets and line everything back up...
