Just wanting to confirm, are your alpina turbos the same as this listing :
https://www.ebay.com/itm/Right-Turbo...1aowq0&vxp=mtr
or this one :
https://www.ebay.com/itm/Turbocharge...FZn7YC&vxp=mtr
The second one is the bigger turbo with a much bigger diverter/blow off valve. First one looks like a stock N63 Diverter.