Hey BigJohn, I don't have the answer to your question,but I have a few questions for you. I'm into Antique Holmes wreckers, & presently have 2 Holmes 515's , a Holmes 525, & a Holmes W45. Does your Holmes 400 have the Chariot , or Platform style Body.Does it have a Holmes Tow Cradle. Do you have any pictures you can post. I had a 1960 Chevy L80 series LCF road tractor. It's pictured(along with all my other Chevy trucks) in the Crestline Published, Encyclopedia of Chevrolet Trucks. The '60 had p. steering, full air brakes, 348 v-8, 5 spd. trans. , 2 spd. rear axle, fact. radio, sanders for the rear wheels,low milage, & had a highway speed of about 70 mph. I remember those hoods having a nickname, but can't remember what it was.