Maybe I'm reading more into this than I should but it seems that every time this "Spoiler" subject comes up things get wierd.
The L78 is a great car i'd give my left nut to have one.
1 or 10,000 it makes no difference to me.
The COPO 9796 is somewhat of a mystery but from the bit's and pieces of information which can be attributed to credible scorces the number looks like its between ? on the low side and 533 on the high side. This is not written in a book somewhere but at the time of the Monterey Trans Am race GM had claimed that 8200 Z's were produced already with the small spoilers, since there was a total production run of 8733 on the 70 Z and assuming that all the rest of the Z produced were COPO's (Highly Unlikely) that would make the total COPO production 533 at best.
We know that it was not until the Dallas race where Chevy pulled a fast one on the SCCA by bolting the newly designed spoilers on to cars at local dealers and parking them in the track parking lot. The Dallas race was rained out and the cars never ran.
Regardless,
Both cars are great and should be looked at that way.
Maybe Im missing something
Actually the stuff was written in a piece by BY CAMERON A. WARREN and JAMES T. CROW for Road and Track Magazine
PS GREAT CAR JEFF GOOD LUCK ON THE SALE sorry for the highjack