hey man, dont know horespower but flogging 100kw 4age corollas and only reving to 6g kit cost me hardly anything
i used a blowthrough setup so suckthrough is a better way to go (no electric fuel pump etc) BUT remember to retard the timing!!!!!
i got a special dizzy made for mine with boost retard in it

very cool!
i think start to finish cost me clost to a grand with my setup