Sanad GT

I want to change my trans from auto to munual which is better for street race T56 or TKO600 or 500 with these mod on my car BBk long tube headers bbk xpip and flow master kit pack , Trick flow trick heat intake manifold with high-velocity intake ports and 75mm throttle body inlet,l range 1.500 RPM 7,200 RPM (BBK70mm throttle body , BBk AIR intake filter .Patriot heads stage 3, Competition Cams Xtreme Energy XE278AH -Intake Lift: 0.550 -Exhaust Lift: 0.550" Intake Duration @ .050": 242 degrees -Exhaust Duration @ .050": 246 degrees -LSA: 113 degrees -RPM range: 2200-6200 .TORQUE CONVERTER 3200 STALL, kit shift, Ring &Pinion 3.90 ) 30lb fuel injectors, MMR 900 short block ,,,, or should i fix my auto ??
waiting for your kindly advice