Well Arush answered this, but here goes...
...how you rectified the dash - We put the ashtray back in, had the OE DIN pocket, put it back in.
...what did you do with the modified rear deck - Removed it... The owner would have to buy a new one if he ever decides to quit showing off
. The old one was ruined.
...what were the earlier speakers in the old rear deck doing? were they subs? - They were those 8" Pioneer 2095 speakers
...The old setup really confuses me - Well lets just say it was a mess and leave it at that lol.