The closest Berkeley to us is a 4-wheeler in the same color as the one in the picture.
But as I understand it they had an air cooled 3-cylinder 2-stroke with a 4-spd motorcycle trans. It is front wheel drive and had chain from the motor down to a jack shaft of sorts with two u-joints in the front at both steering knuckles.
The guy had it for sale and was looking for around $6k. Too expensive for my blood. He also said that he had the motor apart as he couldn't get it running. He said that the crank had been pressed a part and two of the three pistons were timed together instead of 120 degree out of each other.
I was cute though, but way small.