Upper Pines Site 073 Parking Pad Dims

My wife and I are taking our son (6mo.) to Yosemite for the first time, and snagged a spot in Upper Pines (site 073). We've always camped in Yosemite, but we're toying around with the idea of booking a 20 ft. Sprinter/Camper for the trip to add a bit of comfort for the little dudes first excursion. Only snag is that the other family that's with us also has a Sprinter (2005 Dodge that's ~16 ft).

I read all the regulations about RV/Trailer lengths, but wondering if anyone knows for sure what the parking pad dims are? I found a pretty old thread saying that site 073 was 42' x 11', which would be enough for us to squeeze both vehicles on the pad. That said, I want to be sure so that I'm not getting a visit from a ranger. I've called the general number all week without any luck.

TL;DR: Looking to book a Sprinter (20 ft), and other family is bringing Sprinter (16 ft). Anyone able to confirm pad dims for Upper Pines site 073?