too much back pressure with that header, you will have good low rpm torque, but nothing much at high rpm.
3sge twin cam has max torque at higher rpm, can pump out 160 hp approx with very clean fuel and k&n filter but you have to get it professionally done.
i also see a cng kit in there, so i guess this is not a speed performance oriented car.
yes engine will pump out power, but yr no where near its max n/a power with all those things inside with engine