Looks like the cowling top front plate and battery tray have been replaced with flat metal plate. Certainly all four foot-well side panels, and probably front foot-well lower panels also. Cool pedal box for the brake divider. It looks like a lightened steel flywheel. Can't see the calipers, but they don't look like factory Sprite units. Interesting brake line routing. Front chassis horns look modified somehow, maybe for the bonnet. I can see front hinges, suport bar mounted to the rear bonnet opening top and sides. Must be a glass bonnet. That appears to be a screw type (vs Roots type) compressor from the end inlet and outer shape.
Very well done so far.