1 tube is more then enough

3/4 Heater hose IIRC his old setup he would use a fitting to angle the hose out but that's no longer a issue anymore since it's now angled

I would say have around 10 or so, but depends on if your planning on hose clamping everything

Bolts, if it's the ZZP HE it should already have the tabs welded on then you just bolt it to the crash bar