Talk to Vlad about tuning the JB4 over there at National Speed, he just did one with a big turbo on stock motor and make 7xxrwhp... My car will be maxed for the time being around 400whp. No one makes any blower upgrade or really anything beyond tune, slightly smaller pulley, and intake. Aftermarket exhaust barely nets 6-7awhp. I am aiming for 360awhp. Not shabby for a 4200lb car lol.