are they needed on the 2012 Mustang.... Just bought some race star wheels w/ slicks and have been told these are a must.

 

depends.
what kind of racing are you doing, and what kind of power you puttin down.

if you just go occasionally, and only have bolt ons, then i would say you dont need them.
but they really arent that expensive anyways.

 

imo as long as youre not lifting the the fronts, then no.

 

I put down 406 RWHP, and now will be running 15" racestars w/ slicks.

 

I wouldnt worry about it yet.

 

Is it true they will help reduce wheel hop? Going into second was ridiculous.

 

From the factory the chassis is pretty rigid, not necessarily the case with the older generations, so SFC are not really necessary. There are better suspension mods

 

you should look into some suspension packages. like sam strano, UPR, stangsuspension, etc.
is your suspension stock right now?

 

With the pre-2005 (S197) cars they were a "must" because of the flex in those bodies.

The person who told you that with your 2012 they are a "must" is thinking of older Mustangs. My convertible even doesn't flex - and I've driven a friend's S197 convertible with almost 600 to the rear wheels, lifting both front tires on the launch, and no flex. So if a convertible doesn't flex, then the coupe won't have a problem.

 

http://www.uprproducts.com/mustang-s...evel-1-11.html

control arms are a good place to start.