Most Honda trans are indistinguishable without that trans code on the front. When I put my jdm j1 in I didn't see any other markings besides the gold decal with the vin. So as far as I know that's it unless you open it up and count teeth and all that shit.

Look at hondaswap.com for more detailed information they have all the info on All the Honda trans usdm and jdm.