There have been other threads about installing a new sink and faucet in our Interstates. However, I could not find a thread about installing a new sink in the lounge model without going to an exotic trap such as the Mcalpine. If there another thread that addresses this, I apologize to the author.
The issue is we have a microwave immediately under the sink. With the factory sink the Hepvo trap rests on top of the microwave. The Houzer sinks that people have been installing are about 2 inches deeper than the factory sink.
Long story short - you can install the Houzer sink. In fact when I was done the Hepvo trap no longer rests on the microwave. The factory sink comes with about a 3 inch extension between the sink drain and the Hepvo. First trick is to leave that out and connect the Hepvo directly to the drain. The second trick is to not use the strainer that comes with the Houzer. I bought a Glacier Bay strainer from Home Depot that was shorter.
I did have to buy an extension to move the Hepvo to the middle of the sink since the factory sink drain is closer to the back. I just got this from Home Depot. I did install a new Hepvo for no good reason.
While I was working on the sink, I also installed a Shurflo Accumulator Tank. This was an easy installation. It comes with a connector that hooks the tank directly to the pump. This tank also fits nicely next to the pump, under the bottom drawer. I have easy access to the tank to recharge it if necessary just by removing the drawer. Much less pump cycling and much quieter pump.
The following gives links, or details on what I used. Many of these ideas came from the other threads and I greatly thank those owners. I list them again here just to have a complete thread. I have also attached pictures of the sink installation and the accumulator tank.
Sink: Houzer SCF-1830-1
Sink drain: Glacier Bay 1001 977 405 Home Depot
Sink Bottom Grid: Houzer BG-1800
Sink cutting board cover: Houzer CB-1800
Hepvo 1 1/2 inch trap:
Shurflo 182-200 Accumulator Tank: