[Dieselwrencher]

Welcome to the forum! As Jsfucttruck stated, the closed knuckle D44 is a poor choice under a Cummins. If you wanted to retain an old school look, you could use a late 60's/early 70's Dodge D70. They have closed knuckles and the weird weak axle joint/shafts but might hold up to a stock 12v. Another option would be to find someone parting out a napco conversion and get the rockwell style front axle. One thing that would be even cooler, is if you had some one build you a housing for a HO52 front diff. I've only ever seen one other done, but that would be super cool. It sure wouldn't be cheap though. The king pin D60 is the best bet. The way I look at it, if you're trying to leave the truck looking stock, a 12v isn't stock for these. So just build it and make it appear like that 12v could have been an option from the factory with supporting suspension etc. That's what I did with mine.