Hey everyone, I'm getting some FRPP 4.10s and a Bassani x-pipe installed next week. I already have a BBK intake, custom dyno tune, JBA shorty headers, and a B&B axle back exhaust. I'm thinking about also doing Steeda Underdrive pulleys at the same time the x-pipe and 4.10s go in but I'm worried about the charging, A/C, and cooling abilities of the car. I live in Arizona and it gets hot!!! Are the pulleys worth putting in or will I sacrifice cooling abilities?? Also, will the performance gain be worth it? What is everyone's experience with UD pulleys?