honda car codes

hello guys i just need some clearing up in the car codes.

im from australia and im trying to work out what is what.

here i go.

what is the SI-R and the SI??
in australia we have the VTI-R that goes on all the hondas that are DOHC vtec.

honda no longer makes the civic SI (DOHC non vtec, D16a) over here.

now the integras,
what is the GSR?? is it the DOHC vtec??

in OZ we have the type R, VTI-R (this was replaced with the type R) and the GSI (DOHC non vtec) integras
what do u guys in the US have??

thanks for your help

the SiR was a civic or crx that came with the B16 powerplant, this model wasnt offered in the US.

we got an Si which was a 1.6l SOHC non vtec, up until the 99-00 civic came with a b16a2 in there car.

GSR in the us is a DOHC Vtec motor, 2nd in line to the Type R, which stopped production with the newest Integra/RSX.