Consensus? Good luck!
My thoughts...
I don't feel that an anti-roll bar is needed or worth the effort. TCs tend to corner very flat already and solid axles have a fixed camber. Roll bars seem to be much more useful on IFS cars where they can help control the two sides individually.
The rose/heim jointed track rod makes a slight improvement because it eliminates the play in the original ends, and the oversized bar won't bend like the originals do. It also won't allow your toe to change at speed, which I feel may be the biggest advantage. But it isn't a night and day difference and it certainly doesn't look stock so it's more of a personal choice than a necessary upgrade. The original does work fine. I changed mine mainly because I don't have stock steering so I saw no reason to have the original spring-loaded rod ends.
I've never tried the lowering blocks that Mike mentions on my own car. I did recently drive a TC that had them, and it drove and handled very nicely. I didn't drive that car without them however, so I can't really say how much of a difference, if any, they made.
I've put a few panhard rods on and they do seem to make a small difference in steering response. If your front end is set up badly, they make a much bigger difference by masking other issues. I don't see any reason to NOT put one on other than originality. Panhard rods have been a popular performance enhancement for a very long time for good reason. If someone sold one for the rear of the TC, I would like to try it out.
The steering box issue is a hot topic. What I can say is that any of the available boxes, including original, can be set up to perform very nicely. There are only two reasons I can see to change to a Datsun or VW... ease of steering and safety. Not to say the original is unsafe, but since these cars were new people have rightly complained that they were one of the car's weak points simply because they are under-built. The Datsun and VW are absolutely indestructible in comparison, and I've never head of one failing, or even wearing out. In new condition the BC box is fantastic. But the lower ratio of the aftermarket ones does make the steering much lighter, and on the highway or rough roads the car is noticeably easier to control. But the downside is that it steers like a truck in comparison to original. If you've ever driven a Model A, that's pretty much what the TC will steer like with the VW kit. Note that the newest VW kit offered by Moss has improved the steering ratio to be almost as good as the Datsun. I have one car with Datsun and one with BC and they both handle beautifully.
