14b or t25

[tnm27]

My question is which one is better? a 14b or a 2nd Gen. t25 turbo? my turbo isn't spooling and might be needing a rebuild, in the meantime my friend has offer a brand new t25 turbo for free to me, my question is, what's the difference (power wise, fittments, measurements, etc)? will it be compatible with a 1g and will it be worth while to have in the car? my setup is pretty much stock right now. thanks.