S5 FC turbo to S6 FD manifold adapter combo set
 

S5 turbo lower manifold
-port matched
Obsidian Labs s5 fc to s6 fd adapter
- 2 piece design with orings
S6 fd upper manifold -secondary throttles shaved -includes idle control valve
-Full Function Eng. adapter included for GM throttle

Price is OBO, buyer pays shipping