When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Your OP makes me think you want to swap a 5.0 into your truck with a 5.4. If you want to add power to your 5.4 look into a tuner, intake, headers, and exhaust, or a supercharger if you want to get nuts.