I did find a guide wich pins to tape, so that's no problem.

But I also found some benchmarks for these cards in an Apple G5 ... and they weren't really great at all. Even a 9600 outperforms it and an 9800 is a lot faster. Reflashed 9800's can be found for a reasonable price on Ebay ... but is it the same chipset and is it going to be supported ?

About fitting and working ... I hope my Digital Audio isn't going to run hot with one of these or that the PSU can give enough power. I probably have to put it under stress with some game under macosx to discover that. Running Wolfenstein with my current setup on the Radeon 9000 pro for hours without problems but I don't know how demanding that is for 9000 ?