Power Steering Pump and Gear Box ID

[money pit]

I plan on converting my 70 Barracuda to power steering, First, is there a difference between a big block pump and a small block pump? Second, will a steering box from a A or B body fit an E body? Thanks

 

[S Vicious]

SB & B/RB mounting brackets & pully are pump mfg. specific, Output shaft size changed in 73

 

[Adam]

The pump itself is the same, it may have different pressure output. I did this mod on two different cars, and is well worth it.

Mopar Action tech article: http://www.moparts.org/Tech/MoparAction/PumpItDown.pdf