you can buy a dry sump 54c n/a engine with itb for 8k, 260hp second hand.
youll need management and a decent gearbox to get the most out of it.
quaife still do a seq box for the fwd sr20 at around 9k then youll need flywheel,clutch, shafts, etc etc.
cheapest way to do it is buy a car and...