My car original is 5 1/2" wan upgrade to 6.5"
what tool i need to use?
what should i do?

and one more thing

this setup is right or not?

HU >one pre out>elec xover>first way to component with crossover and tweeter.>second way off>sub use for one amp for one subwoofer.

This setup right or not cause confuse why i have one elec xover already the the component set have one more crossover is that right?

and how to diy 5.5 board to 6.5

thanks