Sorry for the barrage of questions but I have never done something like this before. I cracked the SONY box open and it looks pretty simple to do. When you say the same drive, you mean it is a DVD-R drive....it doesn't matter about the manufacturer or if the DVD-R is single layer vs dual layer, correct? Again, I am swapping out the Pioneer DVR-108 for the SONY DRX510A innards. I suppose what I am implying is that I hope that SONY is not using a propietary interface between the ATAPI connection and the firewire out. ANDY