I had replaced the under-sink plumbing once with stock stuff
from GoWesty or BusDepot.  The flexible drain tube was splitting
again and I decided to go a different route.

I put a sheet of plywood or masonite on the bottom++, after reinforcing
the drain connection at the floor.  No more raised floor=more space.
Then I got some good hose at my local hardware and ran it straight
down, or straighter.  No more right-angle bends.

I wouldn't ever go back to stock.  Pictures at
http://jones.colorado.edu/VW/SinkDrain

++ painted Westy grey, or maybe it's Westy gray, I don't remember.

Richard