Arden’s Jaguar XF Based AJ 21 with up to 550 HP

Arden has finally released real life images and mechanical details on its latest creation, the Jaguar XF based AJ 21. The top of the line version of the AJ 21 gets a supercharged V8 engine stroked out from 4.2-liters to 4.5-liters delivering an output of about 550 HP, which should be more than enough to take the “wildcat” into M5 territory. Although that’s the Jag to go for, the German tuning