Do I need a specific type of 4 gauge wire for my monoblock amp?


I purchased a JBL BP1200.1 monoblock amplifier, for the subwoofers in my Cobalt. It did not come with any wiring. There are 3, 40amp fuses on the amplifier. I think that means that the power cable that I hook up to it, needs to have a fuse that is at least 120 amps. I ordered an amp wiring kit online, and it comes with an in-line 80 amp fuse. 

My question is, can I buy and ANL fuse holder to replace the in-line fuse holder on the power cable? And do I use a 120 amp ANL fuse, or a 150 amp ANL fuse?
thirdeyethirdear
Usually, #4 wiring kits are good for 2000 watts and can be used with a fuse block up to 125-A, so it would be okay. If I were installing this in my car, I would use something like the Rockford 1/0 kit with a 120-A wafer fuse, especially if I were cranking up the volume for extended period of time. If you go with the #4, install the fuse holder as close to the positive terminal as physically possible.
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The 40 amp fuses are located on the outside of the amp. (Idk which conductors. I took the safe route, and ordered another wiring kit. Its an OFC (copper) 4 gauge kit. The one I ordered last week, that hasn't arrived yet, was a 4 guage CCA (alluminum) kit. Hence why I was worried about wiring such a powerful amp through alluminum.
I have one final question. The amp is missing ONE set screw. Its an M7 set screw for the power or ground on the amp. Ive looked everywhere. So my question is, how can I securely connect the power (or ground) without that set screw? Can I solder something to fit the end of the wire??
120 amp fuse  that  is higher then the current going through any 
wire in you home. Most houses have a 200 amp service for the whole house. Is this amp for a Stadium ?  I have never seen in 
Audio ever a 150 amp fuse