Dearborn, I bought the (manual) Flaming River steering box 4-5yrs ago. It was like driving a new car compared to the original box. It was pretty easy to change them out best i can remember (done mine with engine in car). Mine has the 4v 351 cleveland, hooker headders, 4spd and has been converted to manual steering. One of the best things i have done and Flaming River is the only way to go IMHO. hope this helps