Newbie<--- what is an SFA :-/

 

Solid Front Axle

And the Megacab is actually built on a 2500 series frame. The 1500's all have IFS...Independant Front Suspension

MC's are labeled as 1500's because they can only tow/haul what the 1500's can...well...almost...lol It's because they weigh so much unloaded they can't haul as much.
I think they have softer springs out back as well?? Not completely sure on that