For the shocks & struts, I'd suggest the Tokico HP shocks. Tokico makes a great quality shock, and will work well with the Steeda Springs (infact Steeda was one of the first companies to work with Tokico on making shocks for Mustangs).
Here is a link to the Tokico HP's
http://www.stangsuspension.com/store...?idproduct=938
As far as brakes, if you want to beef up the stock brakes you can do several things...
[ul][*]Brake Pads (Maybe Hawk HPS or Ceramic pads)[*]Brake Rotors (We have our StangSuspension Cross Drilled & Slotted / Zinc plated rotors)[*]Stainless Steel Lines[*]Brake Fluid (Motul 5.1 brake fluid)[/ul]
Those 4 things you can do on a fairly tight budget. Check out these options in our Mustang Brake category
http://www.stangsuspension.com/store...?idCategory=24
Sincerely,