what cabezzzdb8 said and the drag kit will probably make more power but the greddy kit will make more power quicker, so its basically shit loads of horsepower but a turbo that spools at 5800 RPMs or streetable reasonable HP number (but still kick ass) with a turbo that spools at 4000 RPMs or...
theres some dude with a hooked up 800+ HP rx-7 in my area, no idea who he is but i know he looks like he should be driving a new m5 or something, but hey what ever floats your boat