Stock flexplate will work, that being said, so will starter, BMR makes a crossmember for your application and it will have a TA mount on it or go tunnel mount (UMI, Spohn). 9" tailshaft will allow you to reuse your stock d/s.
*2012 Audi A3 TDI, Premium Plus, DSG, Ibis white
*1994 Pontiac Firebird Formula, Gt47-80 turbo, 580 rwhp/700 rwtq
*2004 Jeep Liberty Sport 4X4