Please help 68 SS 427 #s match?

[JoeC]

A lot more research has to be done on the 67 and 68 Yenko 427 Camaros as there are many unanswered questions. The info is out there but seems to be scattered around the country.
I know on the 1968 Yenkos some COPO codes and information was found that was incorrectly decoded. This resulted in such claims as factory built 427s and/or L88s but this has not been proven.
There is some evidence that Yenko did have a 427 Camaro certified as USA emission legal for sale in the USA .
Yenko did state in some of the 1968 documents that the Yenko Camaro was the only 427 Super Camaro to pass US Gov. emission test.
In reference to the L88 claims - Yenko did advertise that some of the 1968 427 Camaros came with a special intake and 850cfm Holley same as the L88 engine. At first I thought the L88 intake and Holley was part of the COPO 396 package and may be the reason the original L78 had the special MV code but this is not proven. They claimed the Heath Yenko had a original special intake and Holley but other people claim they have original intake and Holley and it is same as std L78. So not sure on this.