Supercharger replacement parts and porting

[jsd]

Hi guys

In the next few days, i will order a new supercharger for my 2012 ZL1.
Now i am not sure, which parts to order with the supercharger. Gaskets, sensors etc. is here somebody, which had done this and can help me to answer my questions?

Here all the parts:

https://www.thatgmpartsguy.com/auto-...omponents-scat

I think about porting the supercharger, before i let ship it to switzerland.
Which guys are the best, to let porting the parts?

Thanks in advance

Regards

Jacek