I've been looking at doing one or the other and since I already have the entire rear in such disrepair, was wondering if it would make sense to start there and leave some room to adjust a 4 link. Since I'm living in OK, there's no point in dropping the ride height down so I'd like to remain as close to stock as possible. Was considering a Mustang 2 front end at some point in the future and 4 link with sway bar and coil overs for the rear. Neither are a real priority since I have wiring, driveline, brakes and gas line plumbing, and finally some sort of interior to work on first.
Martin would be proud of me for finally finding a U joint that mates the 66 rear end to the 52 drive shaft. Granted it only took 6-10 years, but I did it! I finally have the 4 ingredients in one spot that it takes to put these old trucks back together: the truck, the parts, the space, and the tools. Time and money were givens when I bought this, so I don't count them even though they're probably first and foremost on nearly everyone's list. Slow and steady and I may be able to drive it before I retire, but there's a lot of over/under betting going on that wager.