So I have a 99 bpa ultra. I wanted to go with a smaller pulley to get a little more boost. I read somewhere that I can go with a 3.5" pulley without upgrading the fuel system or ECU. I was wondering about brands or pulleys that are the "go to". Also I would like to add a A Pillar boost gauge. Is there a replacement that works for these cars, and where is the best spot to attach the hose for the gauge. I still very new to these cars and appreciate any help in advance..