Would headers help?
 

I have a 00'GT 5 speed and i'm looking to improve my 3rd gear. Every gear pulls like a champ except 3rd. I plan to pick up a MAC off road H-Pipe friday. Also, would a set of BBK headers help and if so should I get equal or unequal length headers?

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00'GT,(S281 clone),3 chamber flows,K&N filter,BBK underdrive pulleys & 3.73 gears. No time slip as of yet(est.13.7-13.9)

i dont believe they make equal length headers for our cars. they are just lucky to get them to fit, let alone be the same length http://www.mustangworks.com/msgboard/smile.gif the only short header i've heard make any hp was the jba ones. like 8-12rwhp. the longtubes typically get 10-15rwhp. both are a real pain to install. the long tubes are worth the sound alone http://www.mustangworks.com/msgboard/smile.gif jmo.
leon

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96 stang,ported 99 heads, 99 intake, 99 cams,Steeda power pullies,Kirban adj.reg.,Pro-m 87,24#inj.,70mm t/b,BBK longtube headers,Bassani x-pipe w/cats, Dynomax ultraflow catback,iat mod, home depot ram air, k@n,373's,cobra brakes,fms spings, tri-ax shifter.
best et 13.80
best mph 103.3
bfg street tires,bakersfield, ca

If you are going to go through the trouble of putting headers on a mod motor, go with long tubes. From what I've heard, even the shorty JBA's don't make much power on a GT (more like 5 hp), but I have heard a lot of good things about long tubes. Should boost power throughout the rev range.