Back before there was vacuum-formed bodies guys would have to create their own favorite body style. I found this in a box of slot cars I just picked up, Looks like the underside was carved out to fit an early Strombecker chassis. Body measures 5-1/2" long, 2-1/4" wide and axle to axle is 3-1/4". Looks like a Ferrari type design. Body is super light, must be balsa wood.
Don't know what to do with it, needs to be finish and polished out.