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.
what conanski said
5.8 is much better for a truck
with just a little cleanup of the heads, minor porting,
you will improve the breathing
the other big thing is the cam shaft
now is the time to decide for any future mods
just keep the shaft compatable with your computer