I built the Dana in my dart myself Moser 35 spline stuff girdle cover and 5/8 studs, have around 800 bucks in it including the truck housing, that I bought with about 5 others, so I already had the housing, if I was starting from scratch I would build a aftermarket 9, even if its several hundred more mainly for the gear options and less weight even if only 10 lbs difference. A 9 will replace the Dana after the car is sorted out and going again. Good luck with it.