Helix HXS-136 speakers

[Clement]

I have 4 nos. of Helix HXS-136 speakers from current car, Do you think it is worthwhile to remove them and install them in a new car? Speakers still in good condition.

 

Thinking of upgrading too: adding in an amp for the front speakers. Would it be a good idea to add in a sub-woofer plus amp as well? Any recommendations? Thinking of sticking to Helix amps and sub-woofers.