for 2500. i would get this.
SVE DRAG WHEELS AND TIRES $1300
http://www.latemodelrestoration.com/...-15X10-15X375-
SWAY BAR RELOCATION BRACKETS $40
http://www.latemodelrestoration.com/...-Mustang-05-14
OFF ROAD X PIPE $300
http://www.latemodelrestoration.com/...1-14-50L-XFM24
HAND HELD TUNER $380
http://www.latemodelrestoration.com/...-Free-Blow-By-
that leaves around 400-500 dollars for a tune. who you go with is up to you, but i recommend kevin dunn. or AED. this post obviously doesnt include taxes but lets say taxes werent an issue, i'd get that setup to fully maximize that hp you can get for cheap and have traction all day.