zeroxseven,
You quote:
"I plan to fix LT8 to my Gen.2. Possible or not?"
Bro, first of all, LT8 not support electronic throttle body or "drive by wire".
If you really want it, you have to mod your throttle body like Proton Putra, Pron Waja (Mitsubishi type) or Mivec, then, connect cable to your foot throttle.
And, other thing is, you have to check on crank sensor ( i think on flywheel ) and cam sensor ( on engine head ). You need those input sensor to trigger the injectors and ignitors.
Good Luck