I know it sounds confusing. What I have is a rebuilt big input shaft gearbox for the 428, which is fine. The problem is the tail shaft is 28 spline and has the small block tail housing with shifter mount at the very end. I need the big block tail housing for the 28 spline output shaft, with the shifter mount farther forward. Can't find one anywhere, only option I can find is a new aluminum one from David Kee but so far I've had zero luck getting an answer by calling and emailing them.