I put power windows in my 53 F100 thats close to completion because I thought it was too far a reach to the pass. window for cranks. I don't have pow. windows in my 46 coupe, and didn't have in my previous 40 coupe, no need as I can easily reach the crank handle. After the difficulty I have had getting the power ones to work well, I don't know that I will use power again. The ones I used are from A-I and are direct replacement for the original regulators. It is my only experience, so maybe of no signifcance.