stereo replacement

I want to upgrade the stereo in my '74 Town & Country. Wally World sells a Scosche brand adapter that states that it works with Chrysler products back to the mid-1970's, but we all know how products don't always work or fit as the packaging claims. So I figured it'd be better to ask here first...

I'm in need of a new silver-faced stereo and would prefer the cassette (and REALLY prefer) the equalizer type that was an option on this model & the LeBaron. I know Chrysler put Infinity systems into later years and wanted to know if the Infinity's would work with the native '85 wiring/circuits...