with the 700x20 tires duals it's a 1 1/2 ton they didn't make 2 tons until later. you may have main spring with auxilary springs mounted above. Previous owner may have also built up the springs(as was case with my 38). 6 cylinder with 4 speed transmission would have been standard.The 41 would be 1st year for that body style which ran thru early 47.Check the gallery for pictures and post some of yours