can the dual return HD pump be substituted for difference between pump price?

• I bought this kit and now need hoses that work with it. It's hard to tell with your description on site if it will work. fitment
• Can I just get the triangle idler pulley bracket with the hardware meant for that? If not just the idler pulley bracket, general
• Can this be modified to work on a 5.8 with the Explorer serpentine? compatibility