NEW UPDATE

it turns out that JBL dont know how much RMS their own stuff has, The GTO6537 that i said was only available in UK was seposted to have 100 RMS, thats what it said on Official JBL site, but when i looked at harman's website for manual for the speaker it said it has 60 RMS, and i found the same information at some German website, so it doesnt make sence to get them from the UK, instead we will get the GTO637, which is sold in US and it turns out is pretty much the same speaker, it even looks the same,

Also we changed the radio for kenwood Excelon KDC-X692, which is a much better radio than the pretty basic blaupunkt.

Also the fact that we wont need to get the speakers from UK means that the whole thing can be done before i got to Europe, and it seems that where we are right now is where we will stay finaly.

Also we decided agains using the factory amp to bridge it for the back stock subs, my father said that it will just make it worst, and that they will make "nosie" that will ruin the crisp, clear sound of JBLs, so we will just disconect the factory amp all together and not use the back speakers at all.