The NP203 is a GM unit, I put a Ford 31 spline input in it and studded the case to fit to a Ford NP435 as shown in the pic. The tranny sold so all I'm selling here is doubler combo. I can help you source a GM 32 spline input if needed. The GM NP205 used is the race track version, not the round bolt pattern. It has a 32 spline input. I have a HD front output that I'd sell with this if desired. The 205 is twin sticked and I will include the triple stick shifter setup. I won't split this up and it's not going to be sold cheap so knowing what the NW Fab doubler costs feel free to make me a reasonable offer. The doubler is new, never run.