TCI will have new design LS headers in a couple of weeks. They will have 1 7/8” tubes with 3” collectors. They are silver HPC coated and have 02 bungs in the reducers. They will fIt both the ProTouing subframe and the Custom coilover IFS. They also wil fit their Camaro ProTouring subframe. They will sell for about $735/pr. PM me if you are wanting a set.