JP SCPH-30000 PS2 with Messiah Mod+US Network Adaptor and HDD, will it work?

[BobaCrazy584]

i have a SCPH-30000 PS2 i bought like a year ago with a messiah modchip. My question is can i use the us spec PS2 harddrive and Network adaptor or will i need to import Japanese models?
please reply A.S.A.P.