From a fitment standpoint... absolutely nothing other than a few holes in the lower front fascia that are easy to move. Now from a look aspect a whole lot nicer to look at... mainly the lower lips that run around the bottom of the bumpers. . They just look... better...
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FRI'd Sidewinder, Novi 1200 S/C @ 5.5psi, Custom TR1235 A2A Intercooler, Ported SRT Headers & Gutted Mid's, EGR, MDS & 02 Delete, Custom Catback w/Blastin Bobs SRT Pipes 4" tips, 170 Tstat, Big Bully Catchcan, 3.06 diff, 2800 stall, MTCM, Tranzformer, SRT Rad, SRT P/S Cooler, 5/15% Tint, SRT 20's, SRT Spoiler & Bumpers, Custom Stainless Grill, SE Coilovers.
AMP'd, FRI'd and Blown... 422rwhp/463rwtq @ 5.5psi conservative street tune!