I have a 1972 Cuda, E-Body, and just installed Electric Life door window openers. Has anyone installed these, if so, confirm, are there only two bolts at the bottom which support and hold the glass? I also don't know if I need to use these small brackets with felt on the ends to support the glass somehow, there are also a couple of these brackets with rubber on the end. Where and how do these brackets go if used with the Electric Life kit at all.