oh god dont bother, my bone stock 02 has taken 5.0s before, build up the 3.8, get a power pack from supersixmotorsports.com (heads/cam/intake) along with a detroit true trac, ta girdle and used 3.73s from mpsautosalvage.com and you have a car that will run 14s.
the 3.8 is a better platform to start off with in the first place anyways, they dont suffer core shifts at 450 HP and end up spliting in half, they are slightly copied off buicks 231 grand national motor but ford instead loosely based their heads off the cleavlends instead of iron, so they can be ported very easily, infact, the stock split port heads put the E7TE heads to shame for the boat anchors that they are,
99 mustang gt 35th vert - bolt ons
09 f-350 lariat CCSB 5.4 - DD
04 f-350 RCLB 6.0 - sold
---8100 lbs 13.9 @ 96 tune/deleted, stock heads