I have changed a lot of Oil pan gaskets in the 42-48 cars and have had no problem There is no need to remove any tie rod ends simply unbolt pan and it drops down enough to clear the crank.As for the rear main seal you can also fix that at the same time upper and lower if you have the right tools. I used a tool called a sneaky-pete it was only $12.00 US and it made it so easy to slide in the new upper rear main seal .
Sneaky Pete tool After replacing rear main seal and sticking the gaskets to the block make sure to put a dab of silicone in the corners where the gaskets meet.
