1966 Mustang fastback with 65 style GT350 side striping

[6s1640]

Hi all,

This attached photograph was taken in 1977 at Portland International Raceway (PIR), where SAAC 17 was held in 1992.  Does anyone recognize the car? and is it a genuine GT350?  It looks like it could be. The two people standing in the photo are Norton Gaston and owner (GT350 owner) Dennis Howell (Name on car.).  Dennis is not shown in the 2011 Registry owner index.  Is this an MIA car?  It is also rumored this car is now vintage racing in California and the unknown current owner based in Sacramento.   Several of us are trying to ID the car.  Any ideas?

Thanks

Cory