im looking to get a new turbo. but i dont know what size i want or need! i want to be puching like 45-50 lbs of boost

so help me out
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97 12V, 370 injectors, hx 35 hybrid turbo 34 lbs of boost, #0 fuel plate, star wheel cranked up, 4K govoner springs, stage 3 cold air intake, 5 inch exhaust, built ats 5 star tranny, and soon to have lots more! blows alot of smoke SOLD!