If you want proper power it will cost a lot of money, especially if you’re intent on staying NA.
I was seriously into Hondas a few years ago, especially find of the b series engines.
My last one was a full sump up build with new pistons, head inc work, cams n’ pulleys, valves, springs, retainers, inlet manifold, throttle body, exhaust manifold & system, intake, ecu, clutch, flywheel, closer ratio g’box etc etc etc.
It was damn quick, revved like a nutter and dynoed at 234bhp and 170 odd LBS ft of torque.
Wasn’t exactly fuel friendly but was frikkin bonkers