there a difference in bracing/frame on the two tops (didnt open Vikkis attachment) , heres a picture (provided a few yrs ago by Jim2002, see the 'extra' brace...pn the one to the left..
if you add power to a non power top frame, the frame will bend , brake...was done to my car...I had to weld frame back, took out the power motor.

now mine is 'manual' ,but with empty cylinders, no springs.