Replace those rusting stock bolts on your engine with polished stainless steel which include the caliper mounts and brake bolts. Here's links where they can be found.
Diamond Engineering Polished Stainless Steel Fasteners
AlloyBoltz Stainless Steel Fasteners and Kits
Gardner-Westcott Company - Packaged fastener kits and bulk fasteneres
Diamond Engineering Polished Stainless Steel Fasteners
AlloyBoltz Stainless Steel Fasteners and Kits
Gardner-Westcott Company - Packaged fastener kits and bulk fasteneres