RP? Rob Beck? Has a upgraded twins option to market and readily available.
Vishnu has a single turbo option that seems to work
Vargas has upgraded twins coming out 'real soon'
That's about it for products that aren't vapourware/remote mount trash.
2016 e63 amg s wagon matte white
2012 bmw m5 JB4+BCM
2009 GTR 774whp