why dont you go waiheng
wasting time here sourcing for a 2nd unit
some more
you also need to go exhaust house to fix the piping if you buy the 2nd unit
no difference maybe worse
better make a new set
it will help you ease your neck of pain
i also explain till kepala pecah :( :( ...but one of my fren say can make a normal 4 cylinder engine into a monster by stuffin in 4 biji turbo......wat da hell he thinkin????any good advice for him??i mean a more...