You could add a newer fuel rail, FPR, and add nitrious. This would be the cheapest, fastest bang for the buck.

Drag and F-max make kits for the engine, and if you are willing to tune the fuel mixture it will easily out power an H22 swap.

I/E/H could be installed but potential will be limited.
Fest bang for the buck would be to dump the stock resonator, and add nitrious in moderation.

There are no off the shelf superchargers either.

I'm still pondering the prepped block and nitrous route as H22 swaps currently don't have an appropriate mount kit and wire harness as other model honda's have. Shaved motor mount and butchered wiring harness are not my cup of tea.