Hello everyone im new to the import world. I just bought an 04 rx8 2 days ago that has the bose system with navigation.

So my ?s......

1. If i change out the stock deck, will i be able to use the navi still?

2. Are the bose speakers good or will it be best to change them?

3. How many amps is the alternator pushing?

These items i have ready to get put in........ 1 HIFONICS BXI2608D amp, 1 DD3500E sub,Stinger 0 guage kit, Clarion NX409 double din