The Kallista is a Panther - a small British cottage industry manufacturer of the 70's and 80's - The Kalista was based on Ford Granada Mechanicals IIRC, and was supposed to be a top-notch quality for a small manufacturer. I think it replaced the Lima...
FWIW - In the end of the eighties I think that company was sold to a Korean? owner that made some real waves with the Solo - a rather sophisticated for the day mid-engine design, but it went underwater after that (or at least disappeared from view).
http://www.pantherclub.co.uk/ for details.
Interesting cars... (I love British cottage industry cars)
Ron.