i just finished putting a set of shorty headers and a throttle body spacer on my 97 lariat a little while ago. if you are considering getting a set be prepared to take all day. also be ready with jacks and jackstands. you have to remove the passenger side motor mount to get in there. also you have to take off your wheels and inner fenders. also keep an assortment of swivels handy . they come in very handy. last of all dont lose you patience when you have to use a wrench for what seems like an hour to tighten a header bolt.

 

I'm thinking of doing headers. Which ones did you go with and how much $$$. I just did the flowmaster Y-pipe swap and have a Gibson cat-back. Works great together but I'm trying to see if doing headers is worth it or not.