I used to autocross this old monstrosity in the SCCA ASP Solo I and Solo II class back in 1993-95. I was always battling it out with some guy in a vintage Lotus Elan that weighed around 1000 lbs, completely loaded.
Amazing to think what power to weight ratio will do to you: a 4000 lb car with 400 hp = 1000 lb car with 100 horsepower.
Now it's a work bench and looks like this: