[PrimeMvr]

I'm doing my first build on a 3.0 from a '83 SC and I'm at the decision point of opening the case. It's gone smoothly to this point, but I am paranoid about disturbing the internals if I don't have to. I feel like I've hit the limit of my DIY comfort level at the case. Here are the facts, what would the experts do in my position?

1. 105k miles. Lots of leaks, but none from the case seam or main seals.
2. Engine ran very well, started right up, smoked at start up and down shifts.
3. Valve guides worn, I replaced along with seals
4. One broken head stud, no visible mating surface damage, lower studs replaced
5. Leak down good at 1-3%
6. P&C, rings, rockers and cams all look very good

I listed the top end info as a sign that this engine seemed to be taken care of, but I have little service history on it.

Is it a given that the IS bearings are shot, and should I just keep going? I don't want to drop a lot of money refreshing everything for the sake of refreshing, but I will gladly replace what needs it.

All advice is welcome!

Thanks,
Steve