yes you are right the guy i bought it from didnt mention the 140 82 had a 115 78 lower i changed the impeller on my 83 140 it was in good shape so ithought i would put it in the 82 140 lower well that one had a woodruff key instead of the flat one so now i started checking and low and behold it leg tag says 115etl78c .i wanted to put it on my 83 run it a bit see if it is ok will that be ok or cause problems thank you all for your help