Ok guys, I'm beginning to get more and more involved with my truck. I currently use it to tow my 8.5x16x7 enclosed trailer and I've installed air shocks on it to help the ride. My question is, I found these bbk underdrive pullies http://www.autoanything.com/pulleys/73A4290A0A0A2611340.aspx and I want to get some feedback on how well our L05 motors respond to these. This would be a great upgrade for towing right? Also, my window switches don't work anymore and the motors in them are also going out and I want to do away with them by just getting the whole manual setup from a junk yard and convert it to manual. Is this an easy one Saturday project? Any special tools needed or just the basic garage tools?