When did Case come out with power steering as an option for big 400s? I have a No. 577 parts catalog with a 5-55 date on the back that does not contain power steering information, and it doesn't put mechanical in front of the steering that it does show. The parts catalog on the CaseIH website is from at least 1957, and it does have the power option. While I'm add it, what are people's opinion of the power steering option for the 400 in terms of how well it works and whether it would be worth adding to a non-power steering 411 wide front. No front weights, although I'd like to add some. From my reading, the power version bolts right in, but I've never thought I needed power steering on DCs. Thanks in advance!