Ninja rev.B fits ASUS P5Q-E. Tight fit and make yourself a favour and take a loong screwdriver but it fits. Bolt-Thru was for my peace of mind.
Final setup
Some temps in load at 26°C room temperature.
Me=very happy. Summer, low RPM's fans and Ninja fanless can keep an E8400 under 55°C in full-load.