Right now im running NA but interested in going turbo if my needs can be met. got a B20 block with 11.5:1 wiseco pistons, eagle rods, stock crank, arp studs. B16 head with S2 valves, springs, and retainers. S2 stage 2 tuner cams and S2 cam gears. ITR intake manifold and 70mm throttle body. all of this in a 99 civic hatch with hondata S100 tuned at 207whp at motorvasion in alabama. exhaust is custom 2.5 pipe with apexi ws2 axelback. what would i need to get to 400whp and can i keeps my ac? prices would be helpful. thanks.

also getting a new S2 intake manifold and fuel rail soon.