Well, not yet. So I am looking to convert my nailhead ‘66 ST 400 from the Buick large spline short tail to a 9” Chevy. Dont worry about why! I know I need a basic Chevy 9” housing and the corresponding basic Chevy output shaft, and it takes dissassembly of the trans to do this. Is this pretty much all there is to it? Or are there very specific parts I need to obtain i.e. NOT your average, basic, any ol’ 9” housing and shaft? Thank you for any input!