Schimbare boxe Astra H GTC

Salutare,

Vreau sa schimb boxele de pe Astra GTC cu urmatoarele:

http://www.infinityspeakers...APPA+60.11CS.html

Pachetul contine:
What’s in the box
• 2 Infinity Kappa component 6-1/2" (165mm) woofers
• 2 Infinity Kappa component 3/4" (20mm) tweeters
• 2 passive crossover networks
• 2 mounting adapter rings
• 2 protective grilles
• 2 foam tape pieces for mounting surface
• 2 I-Mount tweeter housings with hardware
• 2 Infinity badges for tweeter grilles
• Miscellaneous mounting hardware
• Owner’s/installation manual.

Mai este nevoie si de alte piese dupa ce montez boxele?
Mentionez ca masina are sistemul cu 7 boxe.

Multumesc
.