I used to Service Amigas and most 4000D came with buster REV 9. DMAC REV 1 was not officially used in 3000. 3000's came with dmac rev 2. The only thing that used DMAC rev 1 was a2091. All my 3000's have buster 11, ramsey-07, and DMAC-04 anyway. But, most of this is useless banter anyway. Since the system is obsolete most of the still functioning computers have most of the upgrades already. I know if I were to sell any of my Amiga computers it would take me a while to decide which to sell, because I think they are all perfect. I have 2 3000T's, 1 4000D, 2 1200, and 1 3000D with PPC's. I am looking to test which works best with OS 4.0.