My advise on fitting would be to follow the mounting instructions to the extreme, being a very high performance part.
https://shop.alpharacing.com/shop/additional_files/english/2121a130a00-01_mounting instrucutions.pdf
Order a good torque wrench and take all the time that you need.
https://shop.alpharacing.com/shop/additional_files/english/2121a130a00-01_mounting instrucutions.pdf
Order a good torque wrench and take all the time that you need.
