Fastest day I ever had was at Irwindale, 6th overall out of 50 ( with10 instructors driving, one in the 1st RS).
That was in X class and finished 2nd in class IIRC.
I was in a 914 with a stock front sway bar, 200# rear springs, yoko stickies in back and 15 year old rock hard michelins in front and BMW320I front brakes.
I could steer that thing with my right foot.
One of the instructors asked how I could turn in that good of a time with my clutch slipping so badly every time i got on the gas. I tole im that wasn't the clutch, it was the rear tires.
It had a little more HP than stock. (chebby 350 V8).
