Yes. I'd have to go measure mine but don't think it was 9/16 but maybe.
You can buy a spacer for under the WP pulley and then all you have to do it space out the alternator and PS pump.
I guess if your not handy with stuff it may be easier to buy a different damper. I have seen enough damage that I won't run ANY elastomer damper any more and I don't care what the PS guys are doing, because they ain't buying off the shelf stuff.
