you can do it, its easy.
have a large oil pan to catch the fluid.
you take out a few bolts at one corner, then start to loosen up the rest little by little, the fluid will drain from the one corner. the pan is shallow so when its stops leaking hold the pan up and remove the rest of the pan bolts. lower it and spill whats left into the catch pan.
have a can of brake cleaner handy, and some shop rags to clean the pan, there will be sludge all over it and a pile on the magnet, get rid of all that crap. clean the old gasket and re use it. pop the old filter off, pop the new one in place.
put the pan back on, drop the lucas in, and then 6 more quarts of trans fluid. fire it up, let it idle check the fluid level. top off as need, wait for the trans to get hot then re check before adding more fluid if your 1 quart low when cold.
