any advice on an import prelude audio system, and upgrades.

I'm looking at buying a generation 4 Prelude Si-VTEC import (1991-1996)

I know that the VTEC models had a funky audio system with something
active feedback on the rear speakers, and an amplified 6x9 centre
speaker in the rear too.

I've also seen on some US sites, the option of an adaptor to change the
Honda Loom to a standard ISO fitment. Does that make all the speakers
continue working as they would from factory headunit, or does it only
convert the front speakers (I've heard conflicting info)?

I'm not adverse to having to replace rear speakers and rewire them to
bypass the feedback system and rear speaker amp if needed, but if
possible I would prefer to use the factory speakers initally with my
choice of headunit, and then upgrade them once I get a feel for what it
sounds like.

Also, have I read right that the Prelude active feedback system uses
2ohm speakers in the rear shelf? Is it difficult to locate 2 Ohm 2 way
full range speakers? Would they be trickier to upgrade using the
stnadard setup/wiring/amps?
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The poster formerly known as Skodapilot.
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