I own a 2002 Sentra Spec-V and i just blew the QR25 motor for the second time due to lack of information. I was wondering if an SR20DET motor could be a direct swap to my 6 speed FWD transmission or would i need a new one?

I know the answer to this question probably isnt what i want it to be but im open for any opinions.

If i wanted to stick with the QR25, i just read about the Treadstone Turbo Kit or the Turbonetics Kit. Which is better? Do i need to change any internals to run either kit? Also, what is max boost level safely with stock internals?