Help to decipher a mopar vin number

Jim Lusk said
Remember that sequence number includes all cars built on the Hamtramk line (which I believe was actually two lines). ALL A-body convertibles from '67-69 (not sure about earlier) were built at Dodge Main (Hamtramk). My GTS ('68 convertible) has a sequence number in the 111,7xx range (11,7xx cars scheduled - it was not a 1-1 in sequence number and SPD for a lot of reasons) with an SPD of 8/28/67. My '67 Barracuda convertible has a sequence # in the 302,8xx range with an unknown SPD. (311,***, a '67 GTS hardtop in the registry has an SPD of 4/6/67).

My 67 Barracuda convertible has a sequence number 314,*** and was built April 19, 1967. I was also told a rough estimate for convertibles made would be 2% of the engine automatic/4spd total numbers....who knows. I've wondered to that all the different parts required in building a convertible if they'd would of made several if them in a row??