So you have a built 3sgte motor in a ke70 making 300hp that you are thinking about dropping into an ee80 chassis? really Sketch
Well two things, if it makes 300hp well thats just wow, since it's probably whp (haven't heard of any engine dynos in the localities). Dyno charts maybe? Also I'll tell you a little about the 3sgte. It's famous in Pakistan since it is a common and cool swap, but in most communities it's not a preffered platform because it's considered really weak(bottom end).
And the final thing:
Are you planning on making that chiyasee rwd or the 3sgte (you had in a ke70) fwd? 

Is this possible @Hassan1991 ? I mean they came in rwd and fwd cars, please shed some light on this.