Are ya'll talking about the originally Monogram 1/48 B-25? If so, it's a good kit.
If you're talking about an originally Revell B-25...well, it's not as good as the Monogram.
Wait a a sec...did ol' Revell even have a 1/48 B-25 in the old days? Or was it only 1/72? Coulda sworn I built a fairly crap 1/48 Revell B-25, and then being pleasantly surprised with the much better Monogram offering.