I just ordered the JL sub system with speakers an tweeters and Zapco amps...when you guys changed you're receivers did you get to keep the working components on the left of the dash? Thanks!

 

depends on which head unit you go with. Some headunits can still utilize the dash controls with an adapter. Do a search and you will find plenty of info on this subject as it has been discussed many times.
Another person to ask is DJ QUBE....he has done a lot of work with this subject also.

 

QUBE knows all about this!