I have a client who purchased a Cessna 340A and wants to do his multiengine rating in it. First, please, no discussion on whether or not this is a good idea, or whether there are better ways to do it, etc. I've been through all that with him, the pros and cons, and this is how he wants to do it. I do have experience in 340s. However, I have never taught someone for a checkride in one. So I'm looking for some specific and general advice from those who may have done this before in such an airplane (any of the turbocharged, pressurized 300 or 400-series Cessnas or similar): 1. Power-on stalls - 65% power or greater is the ACS standard. This seems like it would take the nose to the moon and airspeed would go well below Vmc at normal training weights (light weight). Advice? 2. Pressurization system - today while flying we started with the pressurization in "Press" (so, normal), but switched it to "depress" when we started doing slow flight and such because at the low power settings it was intermittently unable to maintain cabin altitude so our ears were going crazy (and we were only at 6500 anyway). But on the checkride I am sure he will have to demonstrate operation of the pressurization system. Turn it off (and pop the ears) before maneuvers? Or "simulate" setting it but actually leave it off? 3. Any general advice on training, maneuvers and checkride prep with such an airplane?