Hi Shawen,
Sorry to be the bearer of bad news but there are absolutely no new parts available for the model 33. The only way to restore a 33 is to cannibalise another model 33.
If I'm correct it looks as though yours has gone through some trauma with major surgery being done on the engine table.
I'm going to ask you a serious question and that is what are your long term intentions with this mower ? and with that we can give you the best response possible.
Cheers,
BB