I have had my Passon a855 installed since September of 2017. It's in my 70 V-Code Roadrunner (71 440+6) and replaced the 18 spline a833. A little noisy in the lower gears, but that will quiet down over time and even if it doesn't, that doesn't bother me at all. OUTSTANDING build quality and design, and with a 700 ft lbs continuous torque rating, I am very happy. I have around 600 miles on it. I can't think of any changes that a console shifted car would have to make. I installed 4.10 ring and pinion gears in place of the stock 3.54s and am turning 700 less RPMs in 5th with the 4.10s than I did in 4th with the 3.54s. 1,200 less when the 3.54s were still in.