I'll share my experiences with this mod.
I did this mod on both my 98 MarkVIII, and my 90 SC. The MarkVIII had a much shorter hose due to the placement of the power steering pump, and it worked great at first, but periodically it would loosen up and start leaking, and I could never figure out why.
My SC had a power steering leak from the day I got it. I was a little hesitant to do this mod due to my previous experience with the Lincoln, but after replacing the line with the stock aftermarket, the fittings on the rack, the return line, blowing out the aftermarket pressure line, and deleting the power steering cooler cause that was leaking, I went with this. After the install, everything was great for about 2 weeks, then it started leaking again. I tightened the line up again, and basically every 2 weeks it would loosen up and start leaking again, and then eventually the braided stainless line itself blew out. What I found was happening was that once the line is tightened to the adapter fittings, there is no way for it to swivel, and the vibration and twisting of the motor would actually twist the line and loosen the adapter fitting out of the rack, causing a leak. I was so frustrated with this leak that I was to the point of converting the car to manual steering, but before I did, I decided to take this whole assembly to a local hose shop and get their input. They made up a regular rubber hose for me to replace the braided stainless one, and gave me some steel adapter fittings that seal with rubber O-rings instead of the teflon washer. Also, the fittings on the new line still allow it to swivel even when it is tightened up on the fitting. Total cost for the line and 2 fittings was $34, it installed the same as the braided stainless line, and now I finally have no power steering leak. The Lincoln is currently off the road, but before it goes back on the road, it will be getting the braided stainless line removed and replaced with another rubber line just like the one I got for the SC.
-91 Cougar LS, coming soon, complete overhaul
with a 427" Windsor.
-90SC 5-speed, MP2, coated rotors, double intercooler, 15%OD, ported heads, comp stage 1 cam, 85mm TB, 90MM LMAF, 80# injectors, soon to be transplanted into...
-90 XR7 5-speed black on black w/sunroof
-98 Mark VIII LSC, Procharger P600b, TR3650 swap and 3.73s.
-70 Torino GT Fastback project car. Needs EFI and a manual trans, but I'm not sure what motor to go with yet.
-"Your buddy Mike is INSANE!" -ClintD's dad