heard quite a bit about the rb24s but nothing exciting.
also dont forget the sr16ve.
there were a numbers of other rb motors but they were specials put together by tuners so not nissan. never heard of an rb 25e I have heard of and driven an and rb20e yuk yuk yuk they wont go over 150 or 160 klms some one told me. I might know of an rb 20det cefiro auto here in aus. and lastly dont for get the rd28 diesel as used in the laurels and a few other cars.
cheers