I don't think you will find any new make 741 that works in that board. I have tried LM741 by national and they didnt work. Where did you buy it at? I think TI bought national semiconductor in 2011... so 741 that work in the -32 are probably old stock.
Download the Dolly Parton Manual and add the extra circuit on the 741 that isnt in the -32. Two 10k resistors dividing the 12v in half + a 1uF smooth cap. Not that bad of a job to fit the new parts. You can drill a few holes in the board.