So I'm to the point where I can no longer stand my sh!tty speakers in the Nismo. I would like to just upgrade the speakers first and maybe down the line add an amp. I want to know if swapping the stockers for the Polk MM6501 would be alright if I'm keeping the stock (base) H/U and no amp yet. I don't particularly play my music past level 20, so that's something to keep in mind.
