Quote Originally Posted by HK1837 View Post
My best guess is the original build for sale in early 1974 was only 100, and this is why we only see them in particular driveline combinations and trim. After that initial build were sold (let's say by May 1974) you could order them how you wanted and this may explain the few rarer trims (like 38J) and autos that exist later. You'd have to have been quick though as any orders after the start of July would probably ended up being HJ.
Assuming the first 100 were built like you said early 1974 (do you have a production start date? Whats the earliest hq sandy you have recorded? )....then by early July changing to HJ.... that would make production life around 7 months!! Making the 9 month theory wrong as well! Correct to assume that as well?

That being said, assumption is the mother of all stuff ups