RWD also = Leaf motor. Unless your wallet is bursting and you can afford Tesla parts..Saab 900s are evil, horrible beasts that will drain the life from your soul and cause you to go broke buying special tools. An EV conversion is probably easier than getting it back on the road as an ICE. I'm assuming this is the 900 Classic, not the newer GM owned 900. FWD car = Nissan LEAF motor and Resolve-EV controller. There might even be enough space under the hood of the Saab for the motor stack AND some batteries.