Actually, the FT-86 II's rear looks downright sexy by comparison, even if you compensate for the fact that the diffuser and rear vents aren't really sensible or effective for mass production.
Should've stuck to this and just toned down the diffuser and vents, and give the tails some red lenses.
Plus that gimmicky looking swage line running from the rear fender lip to the bottoms of the sides looks weird by comparison to the concept. Strange alteration imo.