just ordered a set of xs headers and i know everyone says to get new gaskets and bolts. for bolts i should get 8.8 strength 10x40 1.25 or 1.50 pitch metric bolts? which are the new gaskets i need?

are they #3 as shown in the diagram? are those the only 2 i need? is there anything else i need or should know if i'm hooking them up to an apex'i ws2 exhaust? (YES I FINALLY GOT IT!!)

 

You dont need new gaskets. The stock metal ones can be reused. If you feel the need to do so yes its #3