Just wondering as it looks like my plans to build a cossie are being scuppered by the local council and their extremely long waiting list for a lock-up

I was wondering what kind of money it would take and what would be involved in acheiving said bhp from said engine. I'm thinking chip, exhaust, cams, headwork, i.e. gas flowed head or ported head or something and throttle bodies.

Is there anything I've missed and any ideas on what costs roughly what?

Cheers!