My gosh, thanks folks for taking the time to help me. It is very much appreciated
98SVT. that makes perfect sense that there is an original number then updates to the design.
430 Drag pack, So my tail shaft C60R-7A040-C. You think its a small block small output unit bored out for a larger tail shaft?
This is what got me confused on David Kees ID chart. My unit is listed twice
Thing is on his page the units shown with the descriptions below don't show the rear bosses (undrilled) in place like on my unit
Also mine definitely has the big output so may have been bored as you mention they can be.
But Davids chart lists for a 428/429 so could it have come with a large bore from Ford or is this a misprint?
So I can use this for a 428 but would need the shifter location adapter you mention. Can't say I have seen one. Or get another tailshaft
The large trans mounting "foot" is that for mounting in a larger car?
Sorry for all the questions. I've had over 200 Mustangs and these things intrigue me
C6OR-7A040-C
&
C7OR-7A040-A 1966-68 Fairlane, Cyclone, Ranchero, Torino 289, 302, 390
1966-69 Falcon 289, 302
1966-69 Mustang, Cougar 390
14" length, 28 spline
C6OR-7A040-C
&
C7OR-7A040-A 1967 up Fairlane, Cyclone 427, 428
1968-69 Mustang 428, 429
Thank you folks. Peter