Three of the smaller-engined cars that ran in Group 1B.   #58 is Michael Cleary's 1955 Cleary Special, a Devin-Crosley.  The blue car is eland Osborn's 1955 Shannon-Crosley Roadster Special.  Nearest car is  Don Baldocchi's 1954 Nardi Spyder.   Green #17 is Jack Perkins' 1954 Warrior-Bristol.