calling to order the GT-40P's but........

[Shotgun28]

OKay so what is the deal here, talk about a monopoly, I was calling to order my heads today, but they said my Flowtech long tubes wouldn't work and that I needed to use the GT-40 headers, what exactly are these, are they shorties, unequals, I feel cheated, I just got the whole exhaust system about 3-months ago and if I want these heads I can't use my headers or my h-pipe, (made for long tube headers, so it is shorter.)Any ideas, I might as well get more expensive heads just so I don't have to buy new headers, h-pipe, etc. Any suggestions? What heads will accept my Flowtech Long tubes? Anyone have an idea? Thanks, sorry about all the posts of late, just doing some Stang shopping ( huge grin )

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91 LX Convertible Gray on Red B&M Shift improver kit, March underdrive pulley's Richmond 3.73 gears, 1 5/8 Flowtech long tube Headers and off road h-pipe, Flowmaster 2-chamber cat-back with S.S exhaust, MSD 6A Ignition with coil,Cap and rotor, Taylor Pro wires, K&N 12" conical filter system, Jet stage 2 performance chip and Lentech Street Terminator plus on it's way...