Which LT's to use
 

just wanting to see if there is big diffrence in performance or sound between the pace setter LT's and ORY or should i just stay with Hooker LT's and ORY and whats the diff between coated and Uncoated

There shouldn't be much difference between the two. Most people seem to be going with Pacesetters these days. Coated headers are your best choice b/c they won't rust like the uncoated ones, and they help cut down on the radiant heat under the hood.