Hi there, so following @
Chimera suggestion

I did bought those adapters and everything fits properly

at the end I finished installing the following:
- JL C5 650
- Pioneer TS-G1045R Dual Cone
- Kicker 43DSC3504 3-1/2-Inch
- Pioneer GM-D9605 Gm Digital Series Class D Amp
Now I am on the pursuit of a good sub-woofer that sit on the trunk at the side. I have researching a lot and so far I got this two only:
For the first one I am only interested on the sub-woofer but I can't find any selling it separately, only the whole system.
The second one is an expensive one.
Any other suggestion?