I got mine in without taking the K member down , just had to take the motor mounts loose and jack the motor WAY up , be careful though , we even got it up high enough to clear the starter without taking it off , didnt notice this though till we already had it off and was putting it back , having it off makes it easier to take off manifold on that side though , but we bolted it back in then put the header back on . but either way you do it takes alot of time , might take alot of time to take out k member but it might be worth it , we did alot of cussing , i also got a tip from GI joe , cut a slit in the drivers side flange wide enough to clear the dip stick tube , i know you might not wanna cut on a new header but the results are well worth a few minutes to cut it for clearance . if i ever take mine back off im cutting it , took me 3 hours to get the dipstick tube back in and had to get a new one from ford after i monkeyed up the factory one .