electrical help

[cg2694]

So i just got my fully loaded fi sp4 dual 2 in the mail and im planning on putting it a 03 jeep grand cherokee v8 and plan on powering it with a cresendo 2000

but my question is what do i need to upgrade electrical wise to power the cresendo 2000

im trying not to get a new alternator but if i have to i will

[ric006]

well do the big three and put a xs 3000 or 2 in the back you should be good