S1 exige Toyota conversion

Are any companies or S1 owners planning on offering a conversion to drop the new toyota engine (preferebly the supercharged version) into the S1? Would it be a fairly simple swap compared to the honda conversion?

I don’t really see how it could be more simple. You are still trying to mount an engine in a car it wasn’t designed for, so the effort presumably would be the same.
Also go with a K20, more torque, more top end!!

is the k20 lighter at all?

How about a Rover K series, they’re light…