Mods...need anyone who might know expectations

[TRDmod]

st205...from standard
i am putting a new turbonetics turbo rater 450 BHP....a bigger one, not the small er one thers two rated at that BHP...im taking the bigger one, small external wastegate....completely custom manifold equal lengths...greddy type s boost controller......pod filter, exhaust.....no cat converter not straight dump pipe...

i will put the psi at 12 to start with while breaking in the turbo...what should i expect