Adding hoursepower to Mercedes S430.
 

Iam looking into adding twin turbos to my 2000 S430. Iam wondering exactly what do i need. I know I need the turbos obviously, I need an intercooler or add a couple more fans. I need to change the air intake and modify the exhaust. Other than that I don't know what else I need or need to do. Any advice would be appreciated. Thanks.