rb25 shifter compared to sr20 shifter

[gaz_moose]

*backstory* ive put an rb25 transmission onto an sr20 in an s13 chassis. I have 0 rb shifter and like 10 sr shifters.

I cut up an sr20 shifter and rewelded it to clear the dash. when I was drifting at the weekend I popped the shifter out 2 or 3 times. first it was the white shifter bush popping out of the gear selector rod in the actual box.(it was an old secondhand one) so I figured it hadn't seated correctly on install.

then I popped the shifter out of the actual bush.

so my question is,

is the lower half of an sr20 shifter the same as an rb25 shifter? IE, is the ball the shifter bush fits the same distance away from the ball with the 2 groves machined in.
from what im led to believe the only difference in the two is the top part is angled back more on an RB shifter.