You will need head porting, replace your camshaft with a Crower Stage 2 camshaft (or similar), and buy a Bisimoto
adjustable cam gear.
The stock cylinder head is not too good, it needs port and polish, you should also buy bronze valve guides, Bisimoto level 2 cam (or even better),
adjustable cam gear, performance valve springs and retainers and aftermarket valves.
To start with, buy a cold air intake system, a large throttle valve (stock or ported), a Crower Stage 2 cam, valve springs,
an adjustable cam gear, A lightweight flywheel, a 4 -2-1 header, a 2.5 ″ straight pipe exhaust system, and a Hondata ECU.
You will need aftermarket camshafts,
adjustable cam gears, high compression pistons (compression ratio ~ 14), a 3 - row radiator, a Mishimoto oil cooler kit, an oil catch can, an AEM fuel rail, 550 cc fuel injectors, a TODA light flywheel, NGK 9 iridium spark plugs, AEM EMS ECU, and sports fuel.
Nearly everyone's seen aftermarket
adjustable cam gears.