Doug thorley Header install

Before you go that route, you might want to read this thread... Better option on the horizon

http://www.tundratalk.net/forums/tu...-long-tube-header-tundra-5-7-development.html

the thorley's will bolt right on, however, the stock mid pipes need to be cut and adapted to the headers. the stock mid pipes have 2" pipe hidden inside of em. You get huge gains with the thorley long tubes, but the gains would be even bigger if you built all new mid pipes.

better off buying another brand.better and cheaper.they will all need mods to midpipe so install is the same.
figure about 5 or so hours.