I have the 23's, and am very happy with them. with a hemi, it lifted a full 3in, and the only complaint i have is that my factory shocks are a little too short, and they bottom out(top out?) when I hit large bumps/speed bumps, etc. as far as the general ride is concerned, it is a little rougher, but considering its a truck to begin with, not bad. I will say that you will need about an inch in the back to get it back to level if you have a hemi, in your case, diesel might be different. I have a 3in block with no factory spacers in the back and it is perfectly level with no ballast or plow. keep in mind, I need to replace my shocks with longer ones, you should plan on it with the 23's. overall very happy with them, squat about 1/2 to 5/8 in with plow.