will this engine fit?

hello everyone.ive never posted on any forums before only read in them.i have looked everywhere for this info but cant find it so i thought id ask you bikesmart people. i have a 1993 zx6d that i bought that has two spun rod bearings.i have purchased (but not recieved yet)an engine off ebay it is off of an 1996zx6e. i was told that it would fit by the seller.however someone else has told me afterwords that they were different.can you guys help me out and tell me that these are the same engines? if they arent what will i have to change to get it to fit? thanks a lot