I don’t follow every TROS thread so I apologize if this has already been posted elsewhere, but I’d suggest giving this a listen. Essentially it’s Ian McDiarmid saying a line from an old version of the script that pretty much confirms Palpatine is a clone. The line is: “More than a clone; less than a man.” He does it in character too, which is tight.
The audio definitely isn’t amazing, but perhaps some wizardry could be done to make it usable?
Here’s my attempt to clean up the background noise: https://mega.nz/#!bGZy2Sgb!nNUL-Fz75kM1s0M_2rzmGqhHPdttpCpQaGQ3xtloF_M
Also a version with some emulated plate reverb and a fade in the middle to minimize the remaining background noise: https://mega.nz/#!WHB2XSxD!hHFjBD_mZZQ_ZKpgPTl62xtMKZo7YCwvYFUCt_sZHsY