handling

...not if you CAREFULLY marked the location of the rod and reinstalled EXACTLY where it was before. If you arent confident that you accomplished that, I would get it realigned.

I recommend paying extra for the 'lifetime' realignment...with a vintage Mustang, you'll be there at the shop fairly often ;)
 
Well I got the alignment done and yes it drives better but still as good as I had hoped. I did realize that the thing i had not changed were my sway bar to frame bushings. So after I do that hopefully it will be even better.
 
This thread is ancient, but I'll add my bit for those with this problem. I had a similar problem on my 66:

Change your strut rod bushings to rubber Moog ones- this completely changed everything on my car. Don't think about poly- makes it ride like a truck, and people say it breaks strut rods easier.
 
if you want to get the true picture of steering box slop, try turning the wheel while parked AND with the engine turned OFF. With the engine running the power steering hides the slop. Worn steering box plus power steering makes for an inconsistant handler. Mostly it seems ok, then on a turn it will not have the same reaction as the others, which can be a little scary.
 
It's works kinda like a universal socket- but is completely different.

you have unlimited movement with it- there is a inside piece encased in a chunk of metal- the inside piece is attached with a bolt to something, and then the rest of it can move as it wishes. check out my snazy new strut rods I just got from Rosehill performance:

http://www.hunterhicks.com/tech/strutrod.jpg

It's a bit hard to see, but it's the silver round thing inside the black support. When bolted in, it takes the place of the rubber strutrod bushings. Absolutely no unwanted movement like with rubber- this heim joint moves in all the directions the suspension wants to, and is always constant.

here is another one:
http://i14.ebayimg.com/03/i/00/92/bd/0c_1.JPG