Trans Am Dave,
The build sheet colud be located in many various places. The build sheet I have for my '79 H/O is not very descriptive & you need code numbers to decipher the info. Even with this info, not all equipment that was particular to a H/O will be listed. The H/O has many standard items as part of the W-30 package that were options to other vehicles.
The most conclusive info is from the dealer's invoice. You can go to the following site & for a $50 fee, they will forward you a copy of your dealer's invoice taken from actual GM files. You need to furnish your car's V.I.N. These people are very accomodating in providing info to you. You can request the dealer's invoice by phone or e-mail.
vehicleinvoice@gmmediaarchive.com
my contact was Stacy Lillard
GM Media Archive - Vehicle Invoice
phone: 734-421-0273 ext.107
If you would give me an e-mail contact, I will forward some information I have accumulated by research regarding standard features on the H/O.
Please feel free to contact me at:
granrow@sonet.net
Have a great day & nice Easter. H0pe you enjoy your H/O.