Am part way into doing a 58 steering box into 57 conversion. I have the 58 box which has been checked out good. However, I don't have the 58 column assembly. I'm belatedly advised that there may be a problem with the Turn Signals if I don't also replace the 57 steering column. Yes or no? Also, could 58 Horn parts ( if I can find any?) be converted into the 57 column? It would be nice to avoid having to use a dash mounted horn button! I have the correct 58 horn ring contact piece, and I'm aware the horn wire has to be re routed, as the 58 steering wheel shaft is not hollow. But, before we start, any definite info appreciated..

Paul