Oct. 1st = 690 heads and 930 cam. Also, it's a 400hp, single AFB. (QA suffix). That'll save you some bucks
Since the assembly suffix is still there, the VIN derivitive should be there too! Check it to make sure it's the original engine. If it is, that automatically makes the car worth MORE. How many miles are on the old girl?
Send some more photos to Pantera to post for us to see.
If you have more questions as you go along, just ask. I'll be glad to help if I can.
Post the cowl tag info and I'll let you know how it left the plant.
Verne