Im interested in having a go at turboing a spare motor i have but am curious about the charachteristics the motor will have with turbo on cause i dont know a lot of technical stuff when it comes to turbo performance and the pro's and con's of a blow through setup.

Is the car going to be sluggish off turbo because of the setup?
What revs would you expect turbo to hit?
roughly what sort of gain would a stock motor get in terms of power?
would any modifications to the motor make it better suited for turbo application?
what about intercoolers and blow off valves, would they help here or is this not a serious enough setup to worry?
Anything else?