I don't think you need a turbo pump,...
it only keeps the smoke down before boost, you can do that with your foot.
Probably close to 80 horses.
There was a formula I learned in physics class for finding your horsepower.
Had to go from 20-30, 30-40, 40-50 etc.
Then 50-40, 40-30, 30-20.
subract the difference, weigh your car, etc.
When I was checking the HP in my 79 Civic a cop pulled me over and asked what I was doing tearing up and down the road.
I showed him my results and proclaimed a trusty 37HP? (or something close to that) at the wheels.
No ticket.
I think he felt sorry for me; 37HP at the wheels sheesh, your suffering enough already.
Or pictured himself trying to convince a judge to convict me of excessive acceleration. 37HP?

really?
I'll see if I can find the formula.