help needed with clutch linkage

Hi. i am having trouble and hoping someone may be able to help, i am installing a new engine and trans into my 68 barracuda. i have a 383 motor and an 833 trans. it was an auto before. i got a new clutch linkage and all fittings needed from brewers . everything looked good until i fitted the headers, they are the tri y headers from schumachers for big blocks into A bodies.
the header is fouling the linkage from the torque shaft to the clutch fork. i have attached a picture that is taken from underneath the car.
i have a couple of options, i can cut and move the linkage, this would mean shortening the clutch fork by about 3/4" not sure how much this would effect the pedal pressure, i have a mcleod 10 3/4 diaphram clutch.
the other option is to cut and turn the lower part of the header, this would be a last option as they are ceramic coated and cost a few quid.
any ideas or photos of other installations would be appreciated.
thanks fintan