Alright Got a DSM question.

Alright, my brother is putting a bigger turbo in my old talon and is planning on giving me the t25 turbo. I like this turbo cause of its quick spool up at 8-12 psi. thats all i really need in my car. Ok, but i am wondering if the t25 will fit, cause i mean i will be getting it for 100 bucks, or should i but a garret t03 for 700? and will both fit? also, if i were to buy an entire turbo set up just piece by piece what would i need to buy?