the body and frame of the itr is built differently then a regular integra
these include:
rear performance rod
increased rear wheelhouse thickness :idunno:
thicker rear pillar upper girder
thicker raer roof rail upper
thicker rear damper gusset
aluminum strut bar
thicker rear lower arm bracket
performance rod added to rear cross member
theicker rear wheel arch extension
(got all that stuff from acrchived notes i have )
more rigid body
etc etc