I just saw a kit at Carlise yesterday, they claim it is ready to ship, from unisteer for b and e bodies. Comes compete even with a power steering pump for 1200.00, it looked pretty nice, bolts right to the k-member and I asked about heaer clearance and the guy assured me it was fine, that they tested with an array of headers including TTI's.
If you like, when I download my pics from the camera I will post some.