Let's see . . .
In 1972 I was with Phil Stevenson when he drove his 55 Chevy 4-Door Wagon to Bonneville and went 149+ with a 390 Cad in it. I still have the 18's from the back of it on my 28 Mercury Torpedo Salon.
And Ivo's wagon surely went over 200 a couple of times.
And back when, the Heidelberg Speed Shop Crosley wagon, Dodge-powered, was pretty fast.
But the record-holder? Who knows!