The speakers you can just drop in and replace.

As for the sub you'll have to run rca's and a remote off the deck. You'll prolly have 4 blue wires you can do 2 and 2 or wire them all together
1.remote input for monsoon amp
2. power antenna input
3. Remote output of the the deck
4 power antenna output

Does it have a sub output?
What amp do you have?
what subs do you have?

I can prolly walk you thorugh how to wire it if you want, lmk
thanks



brandon