| current Alpine head unit. Okay, so you will need an integration device from PAC to control the signal from your Alpine to the bose amplifiers. I would replace the top portion of your rear Bose enclosures with the 1990 300ZX 6.5" opening or use the 6.5 adapters from Ebay. They are made from MDF and others I have seen are made from ABS. They work fine. [ http://www.ebay.com/itm/Nissan-300ZX-Front-Speaker-Adapters-to-fit-6-5-/250909526733?pt=US_Adapters&hash=item3a6b5f8acd ] [ http://www.ebay.com/itm/Nissan-300ZX-Rear-Speaker-Adapters-to-fit-6-5-/380110974396?pt=US_Adapters&hash=item5880612dbc ]
Then you can mount any speaker you like.
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