SHELBY GT 350 Member
Joined: Sep 2010
Location: see user name
Most n/a hci builds you're looking at 320-340 rwhp range depending on how far you wanna take it. More to be had if you increase displacement and compression, but either way it's expensive and if all you're after is a number at the tires then that's why everybody will say power adder.
2001 GT Convertible
All the usual bolt-on's /200 I6, C4
And a few Explorers too... 2008 4.0 XLT 4x2, 1996 XLT 5.0 4x2, 2003 Sport Trac XLT 4.0 4x4