But seriously, You need a 45 LC Shell plate, Or at least a 45 Auto Rim Shell Plate (not ideal but workable) If you are loading for one of the newer 45 LC guns that uses .452 bullets rather than .454 bullets, you can use the 45 ACP dies, but you will have to modify the expander. If you raise the 45 ACP expander to where it has to go to expand a 45 LC cartridge, it will interfere with the powder slide. You will have to cut some of the top off so it doesn't interfere with the powder slide. I'm not sure if you will still be able to use it for 45 ACP if you make this modification.
As for the Powder Slide... If you use a 00 powder slide, you would need approx. a .470" diameter hole to get a charge of 8.1 grains of Unique... the load I use for 45 LC. You would need a hole diameter of approx .476" to get a charge of 8.7 grains of Unique.