OEM Radio

I want to replace my OEM radio, which has seen it's day in my '94 Mighty Max with a inexpensive radio (with AM/FM/auxillary input). I can't find any webpages to show how to remove the old stereo and put in the new. I've seen the installation kits. Are they hard to use in this truck? Any suggestions on a brand name for a less than $100 stereo? What pin configuration is it on the stock radio and will I need additional wiring harnesses? I belive I only have two speakers in the truck. Will the new stereo require four?

Fred

go to best buy and get a radio wiring harness adapter(it plugs into the truck factory harness and makes putting a after-market radio a breeze..........Matt