I have looked in many places trying to find out what all is needed to convert my non-4ws 1991 lude si... into 4ws. I know I need the front and rear steering rack (with tie rods), rod that conects the 2, and frame mount for rear rack. But is anything else needed from a donor car that is made different? Such as control arms, spidles, stabilizers, or anything? I'm picking up a 91 Si tomorrow for $150 that only needs a manual transmission replaced!!! Thats right! $150!! But I want to convert it to 4ws with all the left over money from getting the car so cheap. Please help me out guys. I found front and rear racks, rod that connects the 2, and rear frame mount for rear rack. But what else is needed? Help would be GREATLY appreciated!!!