Maybe. There's something you have to know about how your original fuses are set up. Power comes from the battery to the main 20 amp fuse only. Then power runs from that to the ignition switch and from there, back to the other 3 fuses. This makes power to them "switched", which is what you need and want. If you run battery power directly to all the fuses, they would be "hot" all the time, even with the key off. So, if that fuse box you got has one power input and all the fuses run off of it, it won't work, at least not for the main fuse. You would want to use a separate single fuse holder for that.
And no Vaseline on the fuses, lol, that's a battery terminal only trick. You could put a little dielectric grease on them though.