Update: I just got an 83 302 from an f150 if was a deal I couldn’t refuse and it has a 351 intake and comes with the carb. Do I still need to look for a 90s f150 trans / 90s mustang trans?
You can use any transmission that will bolt to a Ford small block V8, that has never been an issue
The issue is with Manual transmission's shifter placement on the transmission
Earlier Trucks had the shifter farther forward, under the Ranger dash
Cars/Mustangs had the shifter farther back, between seats in a Ranger
For Manual trans
The 1996-2003 M5OD-R2 from a 4.2l V6(same pattern as small block V8) has shifter in the same place as Ranger's M5OD-R1
If using a Carb and no computer an AOD automatic is best, not AOD-E, AOD