I can try to measure mine in the morning. Ours is a 2012.
One warning - they put the shower drain pump in a stupid location on the very bottom and its a magnet for shearing clean off. Have to constantly be wary of driveways and dips. I only scraped the label off mine a little, but was fed up enough to relocate the pump in the last week. It is a fairly easy job and there is tons of room about 1' away from where they mount it stock. Gains about 1.5" or more I'd guess of additional clearance by relocating it.
In my 5 years of ownership, the P trap has never been a problem. Its always the pump just a little lower and towards the rear that's the first thing you'll shear off.
Why the @#$#@$!@#! they mount it where they do is just stubborn apathy. It doesn't cost any more to put it where I am. Part of my love/hate relationship with the Scamp
. Its great and unique, but sometimes I swear a lot at their lack of customer feedback to improve their manufacturing process.
The shower pump is a great feature over the Casita
gravity drain. Plenty of camp sites where you need a little push to avoid standing in several inches of water all the time.