It might be theoretically possible, but I wouldnt recommend trying it (unless you enjoy the modding more than using the equpment).
Already suggested but I would recommend you sell your A530 unmodified (they sell for lots of $$$) and buy an internal 030 accelerator for the A500 like the VXL030 or something? (Perhaps buy the other accelerator first if you can afford it!) It would have to have an IDE or SCSI controller or you'd loose your hard drive capability.
Also, before you try anything I would make sure the A570 is fully compatible with an accelerator. I have a feeling that it is but I am not 100% sure, I would double check before you spend all this time and effort to find it doesn't work.
Again already suggested but you can connect an external SCSI CD-ROM (or DVD-ROM) to your A530 and give you almost the same capability for very low price? I know it's not quite as good but hey.
If you are willing to loose the 030, you can buy a hard drive adapter and a 2Mbyte RAM upgrade for the A570. It makes it quite usable.
http://freenet-homepage.de/x1541/hardware/a570ram.htmlhttp://www.amitrix.com/scsi-tv-faq.html2.5" SCSI drives can be quite expensive though :-(