THIS IS A RARE 1974 "L" code 360 air cleaner,ONE YEAR ONLY!

I really am intrigued by the finer details of what seem to be similiar parts. Just went and looked at Valiant Patrol, a 1976 "L" code 360 that I have yet to find an unoriginal part on. It is a short snorkel type. No one can say for 100% sure if its original, but as documented second owner, with the first being a state municipality whose focus was maintenance vs. changing/upgrading, the probability of not being original is very low to me. So it puts a question mark on the one year only thing. Could the longer snorkel be a "B" and "E" thing given their wider engine bays? A longer snorkel in my engine bay would be very close to the battery.