haha.
have you ever had seen a Gsr then..
there is in fact a B18c1 which is a GSR,
all those engine codes you just got probably from wikipedia,
but well ok cool.
& yeah the b18c5 is ITR (integra Type R)
& b18c is the JDM type R.

& i never did compare a GSR with a k20z1 which yeah is found in a
RSX, yeah a rsx will probably walk by a gsr.
the type S motor pulls hard,
& yeah the integra is heavy COMPARED to a hatch.
which go head & find out which is heavier,
im talking kuz ive had these cars & pulled on some too.

& the EM1 those coupes with that k20 motor haul a$$ too.
couple friends down south had some modded like that.
hands Down compared to b Series the K series is the winner,
potentially & right out the box.
& by K series I mean ONLY the type S motor.
the ep3 motor simply in my opinion & in my eyes just suck.
& yeah if you do boost it well thats different,
but do the same to a k20z1 & put em side by side.
then who pulls harder