Steve, I have a picture of Ruben Novoa driving it in 1970 and Daniel Muniz driving it in 1971, both down in Mexico. It has 69 Camaro front sheet metal on it and no grille. I can understand the change after being heavily damaged at Sebring. After 1971, I heard it was raced by others down in Mexico until it was left for dead. Rick Titus bought it out of Mexico in the late 80's and the ownership from there has been well documented.
I don't know much about Jon Ward's driving career otrher than in the Camaro/Firebird. I think he was more well known as a car builder. He did do a lot of circle track racing at Saugus, CA but that's all I know.