1. AFAIK the B4 Servo Covers are all actual Volvo parts, so doesn't really matter where you get it from. I did the IPDUSA one, and have some additional notes beyond what they specify on this post in MVS
2. I went with hard (poly) top mount because it seemed less wasteful, as I already had the round type that IPDUSA sells the insert for. For transmission (torque) mount I used OEM, someone has even suggested a way of replacing just the bushings here
, although it's more jerry-rigged! There is a little more vibration at Idle, but I don't find it excessive. I also don't deal with stop & go traffic, so in a typical drive don't have too much time to think about idle vibrations.
4. The DICE/VIDA (VADIS is the old software, VIDA is the newer name) will be potentially one of the most useful tools you can purchase. I bought mine from here
for $150. It's a little bit of a crap-shoot I think about quality, mine worked well though. Note VIDA also comes with complete instructions, troubleshooting, specs etc so is worth far more than just the car interface.
There is guides around various forums about installing VIDA (e.g.: VolvoXC
you'll have to search though). It is highly worth setting up a virtual machine to install VIDA on so you don't waste time chasing down incompatible SW. I would suggest using the free VMWare Player, and either finding a VMWare image of Windows XP Pro, or search for guides on installing Windows XP Pro using VMWare Player such as this article
Note you cannot check if SW is latest or load new for free. You will require a subscription to do so (about $115 for 3 days, then you also pay for SW itself). Note that if your volvo dealer is part of the "volvo service for life", they provide free SW upgrades with routine maintenance such as oil changes. Call them to check for details. If they do that, you might as well get latest SW + also have them check over the car...
5. With VIDA/DICE you can enable shift adaption mode. Note you don't need to "reset" the adaptives (e.g.: drop them completely), you can just enable the adaption mode, which is less drastic as it doesn't relearn everything. Unless something has drastically changed (VB change etc) you shouldn't need to drop them.
6. As mentioned, there should be a sticker indicating the timing belt has been changed. If there isn't one, just assume it hasn't.