Looking at Provamo, looks like AC went underdash at around 8ma1100...(8ma1096 still has the radio in the dash, by 8ma1106 the AC is in the dash instead). See 8ma1084, no radio is installed and leather is across the dash (over the punched holes). The "radio delete" plate I remember was on a picture of 8ma1064, Beverly Hall's car in Henry Rasmussen's "Panteras for the road"...but this must not be original, at least the 4 screw holes holding the plate don't align to a standard radio.
Provamo is a cool place to spend a lot of time... completely not related to leather;
- looks like the solenoid changed from Lucas 2ST to 4ST by 8ma1056.
- somewhere between 8ma1056 and 8ma1076 (my car), brakes changed from 2 piston Al to the cast iron Girling 17/3 and 12/3 (used for years on Lamborghini, Maserati, and Aston).
- the number of cars with their smog pumps in place is around the same number of Mangustas that have been built into race cars. How many of you guys have yours ?
--Lee