The Dynatech kit comes with...
The Dynatech kit comes with long-tube headers and a set of high-flow catalytic converters.
Dynatech Long-Tube Headers
PN 122-842230 $1,495
Designed to fit '99-'04 Lightnings and '02-'03 Harley F-150s with the supercharged 5.4L Modular Ford engine, the Dynatech long-tube headers are a true work of automotive performance art. They come with a 151/48-inch primary, long-tube design that is optimized for power, torque, and improved economy. Out of the box, we were blown away by the quality of the Dynatech headers. They feature huge, tough flanges meant to last a lifetime; polished stainless steel; perfect welding; complete hardware; high-end metal gaskets for a perfect fit and seal; full instructions; and are wrapped and boxed so that they aren't scratched during shipping. We've seen some headers sold for Lightnings that weren't high quality. The Dynatech headers are the polar opposite of that. They look beautiful, promise big horsepower gains, and are built to take a beating.
Now for the bad news. Installing a long- tube header on a Lightning is not a fun job. In fact, it can be very frustrating. Take a look at that small, cast-iron manifold, and you start to realize why it's so hard to install a full race header on one of these trucks. It took the technicians at MD Motorsports the better part of a day to get our headers installed. Pulling the inner fender liners and wheels and moving the engine off the mounts is all part of the procedure. We can't imagine anyone trying this in their driveway on jackstands, although we know some of our readers will pull it off. But the payoff is so worth it. Depending on how much power your truck is making right now, you can expect 20-30 rwhp and at least that much in torque. Plus, with this Dynatech system, you'll never need another header for your Lightning. Put them on, and they'll work with your stock engine, a built 5.4, or that nasty, big-cam KB or Whipple-stuffed monster mill you're dreaming of.

Here is a comparison of the...

Here is a comparison of the factory headers versus the Dynatech long tubes...

It's quite a difference in...

It's quite a difference in looks, and most importantly, in performance.

Installation is quite an undertaking...

Installation is quite an undertaking to say the least. Not that you can't install them in your driveway, just be sure to allow yourself a full day's worth of work to get it all done.
Dynatech
Dept. FTP
P.O. Box 608
975 Hyrock Blvd.
Boonville, IN 47601
(800) 848-5850
www.dynatechheaders.com