P/S box question

[racingsnake440]

Slightly o/t but hopefully someone can help.

A friend is looking for a power steer box for his Challenger. I seem to recall Mopar p/s boxes are pretty much interchangeable all the way from the early '60s into the '80s except for differences in output shaft and possibly input shaft?

My friend's got a Pitman arm for a 1 1/8" output shaft - is that large or small?

Are there differences in the input shaft and which would he need - it's a '73 Challenger btw.

Thanks

 

[yellowdartdave]

According to the parts book, they used 2 different boxes with power steering..

# 3643013
73-74 Barracuda,Challenger, Charger,Coronet,Dart, Duster, Satellite,and Valiant,all models except police cars.

# 3579526
73 Barracuda,Challenger,Charger,Coronet, Dart,Duster, Fury,Monaco,Newport,New Yorker,Satellite,and Valiant.

Identify this unit by the letter "A" stamped on the date tag in place of the numeral "3".

Hope this helps.

 

[racingsnake440]

Thanks Dave, your answer and the thread about p/s pumps gave me the answer I needed.