Powersteering -66 valiant conversion

Not to hi-jack the thread but why is it that flaming river states their manual box is for

Manual Steering Box for Mopar 66-82 A,B,C,E Bodies

All New Design Quick Ratio 16:1 Direct Bolt in!


wouldn't these fit the early a's too? I called and talked to flaming river but the tech department could not give me a solid reason why they don't work. just, " It would have problems" The expert was notin that day......