1979 dodge cruise master

Aw man I have to lift the engine for the oil pan gasket, I've changed motor mounts on a chrysler300 and on a ford explore wasn't hard at all I used a hydraulic jack to left the motor, I looked under there and noticed how big the pan was and how it was set up looks like the engine has to come up quite some way to remove it, I'm wondering can I do the same on this rv as I did on my other vehicles when I lifted the engine? I'm also going to change all the fluids in the transmission from the toque converter and the pan something else I've done many times to new vehicles I've gotten when. I did not see a drain plug so like what I've done many times I'll start off with the pan then I find the line from tranny to radiator unplug that line put it in a bucket then start the vehicle and poor trans fluid in as the old comes out once the old becomes new coming out the line I stop shut vehicle off plug line back up and fill to correct level. Never made sense to me to mix old fluids with new. Again thanks so much for the great info once I have this rv up and running like it should I know my family is going to have a blast on our trips.