well its simple to convert that ..what the the guy did here is ..tube frame chassis as stock wont take the pressure ..as this setup was 305whp for the track use .....
going RWD on FWD car major issues coming when working on gear placement ..as fire wall needs to be altered ......and the stearing box position is changed
in AWD situation we have 2 options
AWD with engine fitted side ways just like in evolutions
or
AWD with engine fitted straight like in skyline GTR
for a FWD car the first option is easy
alot of projects e done on indus corolla with 3sgte setups like that