Why doesn’t cubic inch matter? If it was 420 cubic inches would it be as impressive? And for your stereo comparison hit 170 bd with a 10 inch sub instead of a 15 inch sub. That is kinda the comparison here. Putting aftermarket rods and pistons in it don’t add any hp what so ever it just gives the motor longevity. So if no one has ever taken a ls1(346) on nitrous into the 8’s, stock or modified, and it’s been out since 1998 then clearly it’s not that easy.