Designs for the driver's side engine mounting frame are now done after two month hiatus. Have built in a mix of steel and 3D printed parts to confirm fit. Current plan for the offside front mount is to bolt a clamp around the subframe to avoid having to weld anything on, finalising the design for that this week then will get all the parts laser cut.
Given the constraints of the existing subframe and motor mount positions, the i3 motor only just fits, but it does fit.
Will post the CAD files on here once I've built the mounts and confirmed fit.