Any Mustang guys try these.

[Mikecolosprings]

They are the "Camber Adjuster Bolts" From Steeda.The part # is 271-81280
I've been reading up on Suspension Tunning/Building and have Been reading that these bolts are refeered to as CRASH BOLTS.
Also if you know wich Steeda Camber Plates give the most Adjustment,that would help.

[MHISSTC]

Those are good things to question the Steeda techs about.

I'm not sure if any particular CC plate in the Steeda line is "more" adjustable than another. The choice for your car would be steel or aluminum plates, which should be very similar, if not identical, in adjustability.

The Aluminum '79-'89 plates were recommended to me by the Steeda techs for my CMC '86 Mustang GT since, according to their web site, "STEEDA ALUMINUM CASTER CAMBER PLATES - DRAMATICALLY IMPROVE HANDLING, WITH LESS WEIGHT & MORE STRENGTH THAN STEEL!" They are also more expensive than steel, which may play somewhat into that recommendation. ;)

Also, for a primarily street driven car that will initially see minimal track duty, you may be O.K. adjusting your stock setup to the limits of their travel. That's something you can play with at a tire place that doesn't mind putting your car up on the alignment rack and spending some time messing around. Play with it, possibly elongate some holes, and if you can't get it to where you want it, then get some CC plates. I drilled out the rivits holding my factory adjusting plates in place on my '96 Cobra and was able to have the alignment guy easily get things into the range of a performance street alignment.

Yes, CC plates will give you a lot more adjustability but for a performance street alignment, you probably won't come near the limits of aftermarket CC plate adjustablity, let alone need the degree or two additional adjustability that the "Camber Adjuster Bolts" would give.

[Mikecolosprings]

I was checking out the Steel one's. The steeda tech section says the mustang needs as much Caster and Camber as possible.
I was going to adjust the stock adjusting plates but I think my car was wrecked before. Because one of the Adjusters was rivited to give maximum camber and the other (not rivited) is set to as little camber as possible.
Maybe it was just really out of alignment, after I get a Bushing set i will get it realigned.

[MHISSTC]

The steeda tech section says the mustang needs as much Caster and Camber as possible.

I would say that depends on the intended use of your car. Did he mention + or - Caster and Camber? ;)

With a mostly street driven car that sees a fair amount of street miles as compared to track miles you don't want to get too crazy with mainly the camber settings as you will wear the inside edges of your tires more than what will be offset by the wear mainly on the outside edges of the tires while on the track. You also won't see a lot of benefit from increasing the caster on the street.

Do the rivits look like thay came from the factory? My Cobra had the rivits in them from the factory. I had to drill them out in order to gain some amount of adjustability.

[Mikecolosprings]

The one rivit looks like it was from the Factory. But I'm not going to worry about that, I will get some plates soon enough.
I will run Barely any on the Street.
I remember some friends in High School who had lowered cars and thier tires wore like crazy.