1964 Valiant Manual to Power Steering Conversion, 170 /6

My girlfriend is in the process of aquiring a 1964 Plymouth Valiant that is otherwise pretty stock. It has manual steering and brakes, both of which will be converted to power. The brakes aren't much of an issue, but I'm having trouble tracking down how to do a swap from Manual to Power. There are a few kits I've found on Ebay for new pumps and boxes, but I've read that the column is longer on manual steering cars and the kit is for a 225. How hard is it to do this swap? Are the brackets for the 225 identical to the 170? Are there boxes that fit to the manual column? Also, will I run into clearance issues with the PS pump? Thanks in advance!