XMODSaretheBEST, i used pice of plastic cut to size of front mount
(but it wouldn't keep shape, wheels rub)
in process of making one outta coper and/or alluminum
as for the wing. it comes with STI Impreza (mini z)
btw miniz's skyline is same base as xmod(long)
and a lot lighter.
tail pipes are made from pieces of telescopic antena
and attached with the bumper mount screws.
i didn't go through ALL forums here. there is stuff around here.
anyway on more of such and oher mods
check these guys out
http://www.xmodrc.com
the know what they are talking about