I actually have an A6 compressor, but not the 6.2 bracketry. I have the small block brackets. I am going serp drive and I think will be using a sanden compressor. The A6 is less than a year old, but it only has about 20 minutes of usage. I threw the belt twice due to misalignment, then never got around to fixing the belt. I left the compressor attached so that it could stay filled with the refrigerant and not get any internal corrosion.
Do you still have those D44 gears? I have to check on shipping this big beast to hawaii, but may be interested in a trade for those gears if you still have them.