1966 Nova SS L79 COPO options? Dealer options?

[sakowskimotors]

I am trying to track paperwork down from the previous previous owner if possible. The engine is a matching ZI.
What is the F40 HD package exactly?

Thanks for everyone's help.
Wil
www.sakowskimotors.com

Here is a story you guys will appreciate: I just got this car and it is sitting in my home garage. It has never seen rain since it was restored. One of my best friends is back from Iraq for a couple more days, and is at my house. We are going out for some food and beers but it looks like it might rain. I wasn't going to take the nova b/c possible rain, but then I thought about the situation and decided we are taking her out anyway. We had a great time winding through the gears that night. That L79 engine sounds so sweet.....