That is the old Interseries at Most. It has thrown up more than its fair share of fuglies in the 90's. The car there is a Lola T89/50 and the one exiting left is a Penske PC18.
All information courtesy of Racing Sportscars.
Here is a gem! lancia Stratos anyone?
http://racingsportscars.t35.com:8000...-09-26-068.jpg