Greddy did produce the adapter and it is quite costly
there is an alternative
you can go to USJ - Nasty Port Flow i think....
bring the head with the Itb and ask them to custom a plate to match it
while doing so
you can ask them to do the porting n polishing jobs...
one shot to finish the job
actually this is my junior's problem but trying to help him
His car is from Japan and the windows at the back is a factory tinted windows so he got problem to past the PUSPAKOM. So do u guys know any shop or 'kedai...