Found the answer to my own question. Was at the AACA Grand National this W/E and the class I was in was just awsome. Yenko's-Z16-L72 Bascaynes
and a lot more anyway here is the story:
Talked to the Yenko owners in my class(36B) at Moline this weekend and as I understand it is that the 69 Camaro
Yenko's where actually COPO cars ordered from Chevy so the engines where installed at the factory so the GM warrenty was like any other GM car. When
the car arrived at Yenko Dealership he put on the strips an all the emblems, wheels and etc. It was a different story though for the 67 and 68's as he did
R/R the engines and the warrenty was put out by him not GM. Thanks-Larry