stereo swap, 96 chrysler lhs to 90 crown vic

First timer saying Hello to all who can help

I have a 1990 crown victoria that is in need of a major stereo upgrade(stock stereo from Ford).  I have a 1996 chrysler LHS that has a decent stereo package (stock Infinity stereo system) and I want to swap the stereos.  I plan to get rid of the Chrysler due to engine and suspention trouble and thought I might swap stereos.

If any one can help, I need help finding:

connectors that will adapt to the chrysler Infinity deck 

wiring diagrams and some friendly advice.

Ford stereo has:                                 Chrysler Infinity Stereo has

2 front door speakers                         3 front tweeters

2 rear speakers                                   2 front door speakers

1 amp (small)                                      2 rear speakers

standard deck                                     1 standard Infinity Amp

                                                            tape/CD/radio deck