i just did that on my ranger, i purchased the ranger 03 power windows system at a junk yard, and i couldnt install it myself, so i took it to the mechanics place
trust me it was a complete pain in the ass, making those electric machines get into the door and work, they had to disarm the manual stuff and the electric stuff to make one custom unit that could fit in the door and still work properly, they had to remove the door speakers to fit that, the doors are built different when they have manual or power windows, so my advice is take it to a shop and get some universal kits, and get the oem power controls so the door looks more like stock, that i did with mine