What is the best to upgrade A-body suspension?

My goal for the car is to make it a daily/street car. I have a compcam xe274 in it and 10:1 compression, j heads with 1.88/1.60 valves and dougs headers. 727 trans with manual valve housing. Also some real nice chrome pulleys which adds around 250hp. Front swaybar and bigger torsion bars, 8 3/4 rear end with 3:23 gear. I have a 84 D150 to use in the winter so it mostly stays in the garage at that time unless something breaks on the pickup.[/Q What's the part number on those chrome pulleys, I can use an extra 250 horsepower. Thanks!