71 mgb

my friend is building a 92 ls turbo, he is looking to make 250-300hp, we are goin to switch to arais 9:5:1 pistons, are the stock contecting rods going to be ok or should i switch... also what computure should i use? and will i have to upgrade my valve train?, he wil be using a revhard manifol with a tail or turbonetics wast gate, he would like to boost around 8 or 9 psi for daily driving and 12 to 15 for race.....
will rc 550 injectors be good, also what fuel pump should i get, and does it need a new intake manifold........ if thare is anything i missed feel free to add and if u know of better parts that would fit my aplication please tell...
thanks for all the help
what

sutrusu

hondata for computer
TiAL for wastegate
intake manifold will help his #s a lot
i dont think you'll have to upgrade your valvetrain unless you plan on raising the rev limiter