Absolutely, straight bolt in. I did the same thing 20 years ago and I seem to remember the hardest part was grafting the electrical plugs. All early (XR-XY) manual pitman arms are the same so it will bolt up to any drag link
Addo, good 16:1 worms are worth $100 to $200. I've kept one NOS aside for about 15 years (for a rainy day). I'm definately a power steering convert now so even if I do get another car that would ever need it, I'd probably not use it and go power.You can still pick up good second hand 16p's around and they're the ones you would use. The worm and nut is exactly the same as 16m but they are far less likely to have damaged bearing journals.