Your location? You will need the overdrive lock out cable (41 and 42 are different then later cars and are "expensive"),Bracket that holds overdrive cable to crossmember, Lower part of bell-housing for fifth bolt, rear single rubber mount for back of transmission (Steel Rubber rebuilds them with exchange of core, thrust shaft from stud on bottom of transmission to rear crossmember, regulator (looks like voltage regulator with six terminals), kick down switch and wire loom (Y an Z makes them). Also might need a rear cross member, I will have to look at my 42 to make sure. The drive shaft need to be shorten or the correct one found. I am sure that I have forgotten something. You will be amazed at the difference it will make in how the 41 moves down the road. Last point is it might be a good time to service the clutch.

Yes Maurice it will come out, you will need to support the back of the engine and remove the cross member, governor, solenoid and all cables and linkage. also don't forget the small spring that holds the throw out bearing to the transmission.
It is a tight fit on the shorter wheel base cars that I have done, you might have more room on the limo. If it has not been done in a long time you might think about servicing the throw out bearing and clutch. Good luck

Maurice; It is time for the transmission to be removed and rebuilt with new bearings. Any shortcuts that might might lead to other parts of the ring in the transmission would be unwise and lead to a disaster.

I have several extra cables if you are unable to repair yours. They are all used and will need TLC. Dell

No gasket used manifold to manifold. I have several sets of NOS steel manifold to block if you need them at $45 plus shipping. Dell

I have heard the square jack is for the seniors, I would use it as it appears stronger. I believe the jack pictured in whats left of the correct jack box for 48 is for 55 or 56.

Packwagon; I believe the doors are the same. I fit the doors to my Station Sedan before I made the wood to fit. If the window wood hits the drip-rail it can be trimmed to fit, I had to adjust the rear door window wood when I made the rear quarter window wood. I might suggest you remove the window wood and fit the door and then adjust the wood, if you remove to much you are in trouble. Dell

Paper pads go between front seat support and floor board.

wh76; The custom take 6 and other models 4 they support the hood when open. My point is they are rubber covered metal and the metal will cut through the rubber and damage your paint. I have contacted Steele Rubber and gone round and round about the defective reproduction of this part, to the point of having one of their employees hand inspect the bumpers and ship only ones that the metal can not be felt under the rubber. Hopefully they have corrected the production of the bumper, if you can feel the shape edge of the metal call and return for one that is correctly produced before your paint is damaged. Dell

Kevin; Have you tried the drum on the other side? remove the key and smooth the edges of the keyway on axel and in drum. Dell