OH! Smokin Joe! I was looking at one too but it got sold

I'm also looking at a 1993 CBR 600 F2 but the engine was swapped. I wonder if the original one died or something. Should I stay away from that bike? It's so nice looking. I actually prefer older looking bikes ...
Sorry, I don't know how to answer the second half of your question. Fellow bikers may be more helpful than me