That conversion should not require any modification to the piping in the wall. They should be able to make it up with the P-trap during the sink install. In a worst case scenario they may need to slightly extend the waste arm from the wall but even that is a very cheap repair and most installers will have all the necessary parts handy...

Yes, I have one in my Silestone and love it. I do not have runnels, though. I have the whole area recessed and use it everyday. I would post a picture for you, but seem to be having trouble with photobucket. I believe I'm doing it the same way as previously, but now I just get "Message rejected. Either you did not provide a name for your link or this does not appear to be a valid internet URL." Any suggestions? Nynerd, I think I remember a figure in the neighborhood of $700, but I never paid it. My install was significantly delayed and my counter guy felt bad about that, so he took off that charge. I couldn't be happier. I don't only use it for dishes, but it's a great place to stand a draining colander if I need to use that sink, or a super landing spot for freshly washed produce. teched, someone who read this post suggests you check the plumbing vent on your roof if you have one to make sure the screen is clear. Seems like your drain is "gasping" for air in order to do its job and isn't getting enough, that's why you're getting the "urping". A clean garbage disposal may help with the "goo" too :)

I ordered the Blanco baskets (two sinks in Anthracite similar to yours) in stainless from Homeperfect. They feel much more well-made than the ones I had in my previous sink. It was confusing on the Blanco site to figure out which ones to order, so I contacted CS. It was very difficult to get a straight answer about which ones to order, but I finally got an answer: Blanco 441093 Decorative Basket Waste Strainer, which is the one you want if you do NOT have a disposal. If you do, you'll do best to ask first if you want Blanco. I really like the stainless in the black sink. The only problem I have with it is that occasionally something in the sink will push the basket down and close the seal when I don't want to fill the sink, but that may be a problem with any basket. I don't think there's anything else you need to get, just optional stuff like the grid. I don't have one yet and I don't think I miss it, but many who have it love it.

mls99 - I have a drop in SS sink with drainboard as my main sink and I have been lovin it for 15 years. Those Oliveri undermount sinks look beautiful! As a MAIN sink - the only issue I would have with them is that most of the things that I hand wash tend to be large pots and such and the level difference with the countertop would cause trouble for me. I tend to lay out a towel on the drain board for drip drying these items, and everything can often extend past the edge of the draining board onto the counter. With the "drop off" from the counter to the drainboard I could potentially have balancing issues. I am sure I would figure out how to work around it but I prefer my drop in because it is practically level with my countertop. If you do very little hand washing of dishes this would be a non-issue. As a PREP sink they would be perfect though! HTH, MaryT