Here are some nos from Hagerty. They need more data (comparables) but it's a start.
The Hagerty put you listed is for either the 1967 Ram Air Firebird (1 of 65) or the 1968 Ram Air I (419 produced) and RA II Firebird (104 produced) of 108,400
Aside from that, Hagerty compiles data from Mecum and Barrett Jackson (et al) for their estimates as it relates to real world insurance valuation.
Is it a start? Somewhat..but again, those numbers are relative to the coveted extremely low production RAI/II which commands 40 to 70% over a comparable 400 Firebird.
Si Vis Pacem Parabellum
1967 Starlight black PMD Engineering 400 Auto 1968 Alpine Blue 400 4 speed 1968 Verdoro Green 400 HO 4 speed 2013 1LE 2SS/RS Inferno Orange Camaro.
