Not an argument at all Charley..just a good discussion. I think most guys are missing the point about buildsheets. Sure they can and have been faked..Sure they can be incomplete and missing portions. However if you do your homework and look at enough original sheets a faked sheet can be easily spotted. Case in point..the buildsheet for "Red Alert"...Nothing more than a copy made to approximate how one would look. With what is currently available on COPO's as a general rule..a POP or a window sticker..these items are very easily faked...Therefore why would you pay a premimum for a car that just has these items? Why should a suspected COPO (with only a POP or window sticker)be worth the same as a LS6 with a legit non-faked buildsheet. Look at it this way...the paper buildsheets were made on is special..has a distinct "look" and the codes and font are special as well..Since (please correct me if I'm mistaken here..) nobody has unearthed blank factory buildsheet copies and created a sheet that is intinguishable from an original in both appearance and weathering why should we pay more for a suspected car with a POP that all the items, are and have been available for at least 15 years??? POP's were being sold 15 years ago that are both correct and indistinguishable from an original, add to that age or "weathering" and Whala..a COPO. Since these cars rarely have any other solid factory documentation IMO they shouldn't be worth as much as a Z28 or SS396 Camaro in similar condition. IMO it equates to a "sum of the parts." I'll even go and say that the same applies to LS6's that aren't with a buildsheet as they then would be suspected to the same POP and window sticker problems as the COPO's. Of course cars that have "alternate" docs (invoices, order forms, etc. need to be looked at on a case by case basis)..IMO one would be foolish with the fraud and desception going on today to buy ANY popular musclecar without solid factory docs ( a few exceptions noted).