I am looking to finally ditch my stock pulleys and go with a set of Aluminum Blue Anodized pulleys. But I have a question about the 25% under drive. Will this cause me to have any alternator charging or cooling issues with my setup? I do have a Hypertech thermostate 160 degree I believe is the rating in it now. I also have my fans wired to a relay and a switch and do not have any cooling issues as of now. I have never seen the car raise really above the 190 mark when warmed up. So I just want to be darn sure before I put these on my car. Thanks for any suggestions