Who has the part numbers for the ARP studs needed for the head and mains of the 6.5? I am gonna need longer studs though for my girdle plates that I have made. Any knowledge, please bestow upon me.

The headstud kit is #130 -4062 and sells for ~$150 at summit.
Not sure about main studs but the head studs are 12mm.

The studs that ARP makes for the DSG support must be special, custom made for DSG. They don't show up in the catalog. They're obviously longer than stock studs.