PaPitt the problem with the 2 posts Is the placement of the front arms. Your radius arms are questionable place ot trying to get to the frame with the pads is interesting. Some will use metal stock and go from side to side and set the lift pads on the metal stock. Some will chain the arms to keep them from kicking out along with other variations. Many use them everyday and make it work.
4 post are far safer and easier to get on for the EB's, even your Dodge and Jeep CG will work better with a 4 post. The diesel will be what your lift capacity should be based around. Also the length of runway especially if it's an extended or crew cab.
Like others I started with a single post in ground, 2 post in ground, then 2 post above ground, and scissor lift alignment rack. Having seen cars come off single and 2 post lifts that something I can pass on seeing again. For me every thing but one car is 4x4. The car is rear wheel dr. So a 4 post makes more sense. Besides Getting up off the ground 4 times after placing the arms is something I would rather not do any more. The 4 post when pulling trans or t cases is much safer. Tugging and pulling on stuck parts is far safer. You can use the ramps to set jacks on the frame to pull axle housing, or have bridge jacks and lift the whole vehicle and rotate tires, pull axles, a shelf for holding brake parts, etc. You can get wheel kits and move them to different spots around the shop.
If you where Pulling engine and trans out of front wheel drive cars then you would want a 2 post. They are a little easier to use to pull the body off frames as well. Decide what you will be do the most and buy accordingly.
