I've done two seals on two different 440 Cudas. As far as the center link, just disco the pitman and the idler (leave the tie rods alone), the assembly will swing down about 6 inches and give plenty of clearance.

Pretty easy as far as in-car oil pan removal.

Then you can break the mains and drop the crank just a bit, or try to do it without disturbing the crank, sometimes works, sometimes not. Clean and degrease the main seal sealing areas (where RTV does its job) REALLY well.