833 behind a stout 440?

I have a 4 speed out of a 68 440 4bbl Charger and it is a 23 spline and it had a 8.75, my friend had 2 chargers with the track pak package 440 4bbl Hemi 18 spline 4 speed and a Dana 60. I don't think they came behind any 440, just the track pak cars. And 6 pack A12 cars, all 440 6 pack's