Even with a CBE, LTHs, CAI, UD Pulley, MD370 Manifold and a tune, you wont reach 350rwhp.. that's about 4.5k not including labor, shipping/taxes, misc expenses, etc.
IMO, NA build is not cost effective for someone going after big power gains. If you decided to go for "show" instead of "go" and that's why u are selling then that's justifiable I guess. GL with whatever you decide to do, keep us posted